Your computer is trying to tell you something. Maybe it is grinding to a halt every time you open more than one application. Maybe the screen has cracked, the keyboard has stopped responding, or the whole thing simply will not turn on at all. Whatever the problem is — however minor it seems right now or however serious it has already become — there is a very good chance it can be fixed. And in most cases, fixed the same day.
At Laptop Repair Hatfield, we handle every type of computer repair problem imaginable, from the simplest software tune-up to complex motherboard-level faults. We work on laptops and computers from all major brands — Dell, HP, Lenovo, Apple, Acer, ASUS, Samsung, Toshiba, and more — and we serve customers across Hatfield, St Albans, Welwyn, Garden City, Hertford, Potters Bar, Stevenage, and Harpenden every single day.
This guide covers every computer repair problem we fix, what causes each one, what the solution involves, and how quickly we can get you back up and running. If your computer has a problem right now, call us on 07716 904844 — free diagnostics, No Fix No Fee, and same-day service available across Hatfield and St Albans.
Serving Hatfield — 60 Travellers Lane, Hatfield, Hertfordshire, AL10 8SF. Call 07716 904844. Serving St Albans — Collections and drop-offs available. Call 07716 904844 to arrange.
Every Computer Repair Problem We Fix — Complete List
1. Slow Computer or Laptop
The problem:
Your computer used to be fast. Now everything takes an age — boot-up drags on for minutes, programmes freeze mid-task, and the simplest things feel painfully slow. It is one of the most common computer repair complaints we hear, and it rarely fixes itself.
What causes it:
Slow performance is caused by a combination of factors — too many startup programmes consuming memory, a full or failing hard drive, insufficient RAM for your current workload, malware running silently in the background, overheating causing the processor to throttle its own speed, or an outdated operating system. In older laptops, the single most common cause is a traditional spinning hard drive that simply cannot keep up with modern demands.
How we fix it:
We begin with a free diagnostic to identify the exact cause. Software-related slowdown — startup bloat, malware, fragmentation, outdated drivers — is addressed through a professional tune-up. Hardware-related slowdown is resolved through an SSD upgrade, a RAM increase, an internal clean, or a combination of all three depending on what your specific machine needs.
Turnaround:
Same day in most cases.
If your computer is running slow right now, do not put up with it any longer. Call 07716 904844 — we will tell you exactly what is causing it and fix it fast.
2. Laptop or Computer Not Turning On
The problem:
You press the power button and nothing happens. Or the laptop starts to boot, gets partway through, and then shuts off. Or it powers on for a few seconds before going dark again. A computer that will not start is one of the most alarming faults a user can face — but it is very rarely as catastrophic as it first appears.
What causes it:
The most common causes of a computer not turning on are a completely dead battery or failed power adapter, a corrupted Windows installation that prevents the boot process from completing, a failing hard drive that cannot load the operating system, a RAM fault causing the system to fail its startup checks, overheating triggering an automatic shutdown before the desktop loads, or in more serious cases a motherboard or power circuit fault.
How we fix it:
We test each possible cause systematically — power delivery, battery health, RAM seating, hard drive status, and boot configuration — to identify the exact fault. The majority of no-power faults are resolved with a battery replacement, a charger test, a Windows repair, or a drive replacement. Genuine motherboard faults are less common but are also assessed and quoted transparently.
Turnaround:
Same day for most causes. Complex motherboard faults may require additional time.
3. Cracked or Damaged Screen
The problem:
A crack across the display, a black patch spreading from one corner, lines running top to bottom, or a screen that has gone completely dark. Screen damage is one of the most common physical computer repairs we carry out — and one of the most straightforward when handled professionally.
What causes it:
Physical impact is the most common cause — a drop, a knock, or the lid being closed on an object. Pressure damage from an overpacked bag, a manufacturing defect, or a broken hinge pulling on the display cable are also frequent culprits. Screen lines and flickering without physical impact often point to a display cable fault rather than panel damage — which is a significantly cheaper fix.
How we fix it:
We assess the screen to determine whether the fault is the panel, the display cable, or both. A damaged cable can be replaced without touching the screen itself. A cracked or failed panel is replaced with a correct OEM or high-quality compatible screen for your exact laptop model. All screen work is completed by our certified engineers using the right tools.
Turnaround:
Same day in the majority of cases.
If your screen is cracked or showing lines, contact us today — 07716 904844. Every day you delay risks the damage spreading further.
4. Virus and Malware Infection
The problem:
Pop-up adverts flooding your screen. The browser redirecting to websites you never asked for. The computer running so slowly it is practically unusable. Strange programmes you never installed appearing in your task bar. Your antivirus switching itself off without explanation. These are all signs of a virus or malware infection — and the longer it runs, the more damage it does.
What causes it:
Viruses and malware most commonly arrive through phishing emails containing malicious links or attachments, downloads from untrustworthy websites, infected USB drives, pirated software, or compromised websites that silently install malware the moment you visit them. Once inside, the malware can steal data, monitor activity, lock files for ransom, or use your computer to attack others.
How we fix it:
We use professional-grade security tools to perform a deep scan of every layer of your system — not just the surface level that consumer antivirus tools check. All identified threats are removed completely, any backdoors or residual processes are cleared, your security software is updated and configured, and the computer is tested to confirm it is fully clean before it is returned to you.
Turnaround:
Same day in most cases.
If you suspect your computer has a virus, call us immediately on 07716 904844. The sooner we act, the less damage is done.
5. Laptop Battery Not Lasting or Not Charging
The problem:
Your laptop dies within an hour of unplugging. It will not charge past a certain percentage. It shows “plugged in, not charging” in Windows. Or the battery has swollen and is visibly pushing the casing apart. Battery problems are among the most disruptive computer repair issues because they take away the fundamental portability that makes a laptop useful.
What causes it:
Natural cell ageing after 300 to 500 charge cycles is the most common cause of reduced battery life. Keeping the laptop permanently plugged in at 100%, using non-original chargers, repeated full discharges, and sustained heat exposure all accelerate battery degradation. Swollen batteries are caused by gas pressure building up inside ageing cells — and are a safety concern that should be addressed urgently.
How we fix it:
We replace the battery with a genuine or certified compatible unit matched to your exact laptop model. A swollen battery is handled with proper safety equipment and disposed of correctly. Every battery replacement includes a full charge cycle test before the laptop is returned.
Turnaround:
Same day in most cases.
6. Broken Laptop Hinge
The problem:
The laptop lid creaks, feels stiff, or wobbles when open. The plastic casing around the hinge has cracked and is pulling away from the chassis. One side of the screen sits higher than the other. A broken hinge is not just a cosmetic problem — every time you open and close the lid on a broken hinge, you risk snapping the display cable and causing the screen to go permanently dark.
What causes it:
Years of daily opening and closing gradually wears down the hinge mechanism. Opening the lid from one corner rather than the centre, dropping the laptop with the screen open, carrying it by the screen, and manufacturing design weaknesses in certain models all contribute to hinge failure. Some laptop models — particularly certain Dell Inspiron and HP Pavilion variants — have known hinge design issues that cause the surrounding plastic to crack prematurely.
How we fix it:
We source the correct replacement hinge for your exact laptop model, fully disassemble the display assembly, address any cracked chassis plastic around the mounting points, fit the new hinge correctly with the proper fasteners, check the display cable for damage, and reassemble the laptop so it opens and closes smoothly and holds position correctly.
Turnaround:
Same day in most cases.
Do not keep opening that lid and risking the display cable. Call 07716 904844 today.
7. Laptop Fan Noise and Overheating
The problem:
Your laptop sounds like a jet engine every time it is under any load. Or it makes a grinding, clicking, or rattling noise that was not there before. The bottom of the laptop is hot to the touch. The computer keeps shutting itself down unexpectedly. These are all symptoms of a cooling system that is no longer doing its job properly.
What causes it:
Dust and debris accumulating inside the cooling system over months and years is the most common cause. As dust builds up on the fan blades and heatsink fins, airflow is reduced and temperatures rise. The processor responds by spinning the fan faster — which is why the noise increases over time. Dried thermal paste between the processor and the heatsink is the second most common cause — once the paste degrades, heat cannot transfer efficiently and temperatures spike. A worn fan bearing causes grinding and clicking noises.
How we fix it:
We fully disassemble the cooling system, remove all accumulated dust from the fan, heatsink, and ventilation channels, replace the thermal paste with a fresh application, inspect the fan for bearing wear and replace it if needed, and reassemble the laptop. The result is a cooler, quieter machine that performs better because the processor is no longer throttling itself to manage heat.
Turnaround:
Same day in most cases.
8. Laptop Screen Lines and Dead Pixels
The problem:
A line running horizontally or vertically across the display that will not go away. A cluster of tiny black dots that appeared without warning. A section of the screen showing the wrong colour or flickering constantly. Screen lines and dead pixels make every task on the computer harder and more frustrating — and they almost always get worse without intervention.
What causes it:
Physical impact causing internal LCD panel damage is the most common cause of both screen lines and dead pixels. A damaged or partially disconnected display cable causes lines that change when you move the screen lid. LCD panel ageing, overheating, sustained pressure damage, and manufacturing defects are also contributing factors. Lines that shift or disappear at certain angles almost always point to the cable rather than the panel — a cheaper and simpler fix.
How we fix it:
We connect the laptop to an external monitor to determine whether the fault is in the screen or the graphics hardware. We then assess whether the display cable, the panel, or both need addressing. Cable faults are resolved without screen replacement. Panel damage requires a full screen replacement with a correctly matched unit for your exact model.
Turnaround:
Same day in most cases.
9. SSD and HDD Replacement and Upgrade
The problem:
Your hard drive is clicking, grinding, or making unusual noises. Your computer is taking an extremely long time to boot. Windows is throwing drive error messages. Or your existing drive has failed completely and the computer will not start. Alternatively — your current drive is simply too slow or too small and you want to upgrade to something faster and better.
What causes it:
Traditional HDDs have mechanical components that wear out over time — the spinning discs, the read/write arm, and the motor all degrade with use. Sudden impact can damage HDD components immediately. SSDs have no moving parts and are significantly more reliable, faster, and better suited to modern laptop use.
How we fix it:
We replace failing drives and carry out upgrade installations for both SSDs and HDDs. Every drive replacement includes a full data backup from your existing drive, a clean Windows installation on the new drive, all driver updates, and a full data restore — so you collect your laptop with everything exactly as it was, just running dramatically faster. We source the correct drive type for your exact laptop — SATA SSD, NVMe SSD, or M.2 depending on your machine’s specification.
Turnaround:
Same day including data transfer and Windows reinstall in most cases.
10. Water and Liquid Damage
The problem:
A drink was spilled on the laptop. It may have switched off immediately, or it may still be running — but behaving strangely. Keys have stopped working, the screen has gone dark, or the laptop keeps shutting down randomly. Liquid damage is one of the most time-critical computer repairs — the faster you act, the better the outcome.
What causes it:
Water, tea, coffee, juice, and any other liquid conducts electricity and causes short circuits across the motherboard and other components the moment it makes contact. The longer the liquid stays inside the laptop without being addressed, the more corrosion it causes — and corrosion is the real enemy. A laptop that works immediately after a spill can still fail days later as corrosion spreads.
How we fix it:
The laptop is powered off immediately if it has not been already. We fully disassemble it, clean all affected components with specialist solutions to neutralise corrosion, assess which components have sustained damage, replace any that cannot be recovered, and reassemble and test the laptop. The sooner the laptop reaches us after a spill, the higher the chance of a full recovery.
Turnaround:
Typically 24 to 48 hours depending on the extent of the damage.
If your laptop has been in contact with liquid, switch it off immediately — do not try to turn it back on — and call us on 07716 904844 right away.
11. Keyboard Not Working
The problem:
Certain keys have stopped responding. Some keys are sticking or registering the wrong character. The entire keyboard has gone completely unresponsive. A keyboard fault can make a laptop almost completely unusable for anything that requires typing.
What causes it:
Liquid damage is the most common cause of sudden keyboard failure — even a small amount of moisture seeping under the keys can short circuit the keyboard membrane. Physical damage from a drop or impact, dust and debris building up under the keys, a loose or damaged keyboard ribbon cable, and driver faults are all additional causes. On some laptops, individual keys can be replaced. On others, the entire keyboard unit needs replacing.
How we fix it:
We identify whether the fault is hardware or software, test the keyboard connector and ribbon cable, and carry out the appropriate repair — whether that is a driver reinstall, a connector reseating, a single key replacement, or a full keyboard replacement. We source keyboards specific to your laptop’s model and language layout.
Turnaround:
Same day in most cases.
12. Charging Port Repair
The problem:
The charger keeps falling out of the laptop. The laptop only charges when the cable is held at a specific angle. The charging port feels loose or wobbly. The laptop is not charging at all even though the charger works fine on another device. A faulty charging port means your laptop is permanently tethered to the charger — or not charging at all.
What causes it:
The charging port is one of the most physically stressed components on any laptop. It is plugged and unplugged multiple times a day, often at angles, and sometimes under tension when the cable is pulled. Over time the internal contacts wear, the solder joints crack, and the port physically loosens from the motherboard. Physical impact and liquid damage can also cause sudden charging port failure.
How we fix it:
We assess whether the port needs resoldering to the motherboard or full replacement, source the correct port for your laptop model, carry out the repair under magnification with precision soldering equipment, and test charging thoroughly before returning the laptop.
Turnaround:
Same day in most cases.
Contact us on 07716 904844 — a faulty charging port only gets worse and eventually stops working entirely.
13. RAM Upgrade
The problem:
Your computer freezes when you have multiple applications open. Switching between programmes causes significant lag. The Task Manager shows memory usage consistently above 80 percent. You need more from your computer than it is currently able to deliver.
What causes it:
Most budget and mid-range laptops ship with 4GB or 8GB of RAM — sufficient when the laptop was new but increasingly insufficient as Windows, browsers, and applications grow more memory-hungry over time. Running out of RAM forces Windows to use the hard drive as a substitute, which is dramatically slower and causes the freezing and lag you experience.
How we fix it:
We identify the maximum RAM capacity your laptop supports, source compatible RAM modules for your specific model, install them correctly, and test performance to confirm the upgrade is working as expected. Many laptops support upgrades from 4GB to 8GB or 16GB — a change that makes an immediate and significant difference to everyday performance.
Turnaround:
Same day.
14. Data Recovery
The problem:
Your hard drive has failed and your files are gone. Or you accidentally deleted something important and emptied the Recycle Bin. Or your laptop was stolen, water damaged, or simply stopped working — and your photos, documents, and work files were on it and were never backed up.
What causes it:
Hard drive failure, accidental deletion, ransomware encryption, physical damage, and formatting errors are all common causes of data loss. In many cases that feel completely hopeless, professional data recovery tools can retrieve files that standard methods cannot access.
How we fix it:
We assess the drive to determine whether the failure is logical — where the data still exists but cannot be accessed normally — or physical, where the drive hardware itself has failed. Logical failures are addressed with professional recovery software. Physical failures are handled with specialist tools. We recover as much data as possible and copy it to a new drive or external storage before returning everything to you.
Turnaround:
Depends on the type and severity of the failure. We will give you a realistic estimate after the initial assessment.
15. Windows Reinstall and System Recovery
The problem:
Windows is corrupted and throwing errors constantly. The computer will not boot into Windows at all. A virus has damaged system files beyond repair. The computer has become so slow and cluttered with problems that a clean start is the most practical solution. A fresh Windows installation is sometimes the fastest and most effective fix available.
What causes it:
Windows corruption can result from a failed update, a virus infection that damaged system files, a hard drive developing bad sectors, or years of accumulated software conflicts and errors. Sometimes a clean reinstall is genuinely the most efficient path to a fully functioning computer — particularly when multiple overlapping problems have built up over time.
How we fix it:
We carry out a full data backup before any reinstall begins — your documents, photos, music, and other personal files are protected throughout. A clean installation of the correct version of Windows is performed, all drivers are updated, your data is restored, and the computer is tested to confirm everything is working correctly.
Turnaround:
Same day in most cases.
Why Choose Laptop Repair Hatfield for Computer Repairs?
Every repair we carry out comes with the same set of commitments — because we believe you deserve to know exactly what you are getting before you hand over your device.
No Fix No Fee — If we cannot fix your computer, you pay absolutely nothing. No diagnostic fees, no call-out charges, no wasted money.
Free diagnostics — We assess your computer and tell you exactly what is wrong and what it will cost to fix it before any work begins. No surprises.
Same-day service — The majority of our repairs are completed the same day you bring the computer in. We know how much you depend on your device and we do not make you wait unnecessarily.
3 to 6 month warranty — Every repair we carry out is covered by a full parts and labour warranty. If the same problem returns within the warranty period, we fix it at no additional charge.
All major brands — Dell, HP, Lenovo, Apple MacBook, Acer, ASUS, Samsung, Toshiba, Microsoft Surface — if it is a laptop or computer, we repair it.
Certified engineers — All repairs are carried out by certified, experienced technicians. Not trainees. Not guesswork. Proper professional repairs every time.
Home visit service — We come to you within 3 hours across Hatfield, St Albans, and all of Hertfordshire. You do not even need to leave the house.
Computer Repair Cost Guide — What to Expect in Hatfield
We believe in complete pricing transparency. Here is a general guide to what different types of computer repairs typically cost at Laptop Repair Hatfield:
| Repair Type | Typical Turnaround | Notes |
| Software tune-up & optimisation | Same day | Includes startup cleanup, driver updates, performance optimisation |
| Virus & malware removal | Same day | Includes security software setup after cleaning |
| Battery replacement | Same day | Price varies by laptop brand and model |
| Screen replacement | Same day | Price varies by screen size and type |
| Hinge repair | Same day | Includes chassis assessment |
| SSD upgrade | Same day | Includes data transfer and Windows reinstall |
| RAM upgrade | Same day | Price depends on capacity and compatibility |
| Keyboard replacement | Same day | Price varies by model |
| Charging port repair | Same day | Includes solder and connector work |
| Water damage repair | 24–48 hours | Outcome depends on extent of damage |
| Data recovery | Varies | Assessment required before quote |
| Windows reinstall | Same day | Includes full data backup and restore |
All prices are quoted transparently after a free diagnostic assessment. Call 07716 904844 for a specific quote for your computer and fault.
Internal Links — Related Repair Guides
If you want to read more about any specific repair covered in this article, we have detailed guides for each one:
- Slow computer — Read our complete guide on how to fix a slow computer, covering every cause and solution step by step.
- Laptop battery — Read our full laptop battery replacement guide including signs your battery needs replacing and what to expect from the service.
- Laptop fan noise — Read our detailed fan noise guide covering causes, DIY fixes, and when professional cleaning is needed.
- SSD vs HDD — Read our complete SSD vs HDD comparison guide to understand which upgrade is right for your laptop.
- Laptop screen lines — Read our screen lines guide covering every type of display line fault and how each one is fixed.
- Dead pixels — Read our dead pixels guide covering the difference between stuck and dead pixels and what can be done about each.
- Broken laptop hinge — Read our hinge repair guide covering why hinges break, what happens if you ignore it, and how the repair is carried out.
- Virus and malware — Read our complete virus removal guide covering how to spot an infection and what to do immediately.
- Phishing and malware — Read our phishing guide covering how attacks work and how to protect yourself going forward.
Frequently Asked Questions
What types of computer repairs do you carry out in Hatfield? We carry out every type of laptop and computer repair — from software tune-ups and virus removal to screen replacements, battery replacements, hinge repairs, SSD upgrades, RAM increases, keyboard replacements, charging port repairs, water damage recovery, and data recovery. If your computer has a problem, call us on 07716 904844 and we will tell you whether we can fix it.
How quickly can you repair my computer in Hatfield? The majority of our repairs are completed the same day you bring the computer in. Software repairs, battery replacements, screen replacements, SSD upgrades, RAM upgrades, keyboard replacements, and charging port repairs are all typically same-day jobs. Water damage and data recovery may require additional time depending on the extent of the fault.
How much do computer repairs cost in Hatfield? Costs vary depending on the type of repair and your specific laptop model. All diagnostic assessments are completely free and we provide a clear, fixed quote before any work begins. We operate a strict No Fix No Fee policy — if we cannot fix it, you pay nothing. Call 07716 904844 for a no-obligation quote.
Do you repair all laptop brands? Yes. We repair Dell, HP, Lenovo, Apple MacBook, Acer, ASUS, Samsung, Toshiba, Microsoft Surface, and all other major laptop and computer brands. All repairs are carried out by certified engineers using quality parts matched to your specific model.
Do you offer a home visit service for computer repairs in Hatfield? Yes. We offer a home visit service and can come to you within 3 hours across Hatfield, St Albans, Welwyn Garden City, Hertford, Potters Bar, Stevenage, and Harpenden. Call 07716 904844 to arrange.
What is your No Fix No Fee guarantee? If our technicians are unable to successfully fix your computer, you pay absolutely nothing — no diagnostic fees, no call-out charges, no labour costs. You only pay when we fix the problem. This guarantee applies to every repair we carry out.
Is my data safe during a computer repair? Yes. We treat every device with complete care and take data protection seriously throughout every repair. For repairs that require a Windows reinstall or drive replacement, we carry out a full data backup before any work begins and restore everything afterward. Your files, photos, and documents are protected throughout the entire process.
Which areas near Hatfield do you cover for computer repairs? We are based at 60 Travellers Lane, Hatfield, AL10 8SF and serve the whole of Hertfordshire — including St Albans, Welwyn Garden City, Hertford, Potters Bar, Stevenage, and Harpenden. We also offer a home visit service across all of these areas.
Book Your Computer Repair in Hatfield Today
Whatever your computer problem — from a minor slowdown to a completely broken machine — Laptop Repair Hatfield has the expertise, the parts, and the commitment to fix it properly. Fast. Affordably. With a guarantee you can rely on.
Do not put up with a computer that is letting you down. Do not spend money on a new machine when a repair is all that is needed. And do not trust your device to anyone who cannot back up their work with a proper warranty and a No Fix No Fee promise.
Call us today. We are ready.
📞 07716 904844 ✉ info@laptoprepairhatfield.co.uk 60 Travellers Lane, Hatfield, Hertfordshire, AL10 8SF
Same-Day Service · No Fix No Fee · Free Diagnostics · 3–6 Month Warranty · All Major Brands · Home Visits Available
