The laptop is buggy: 12 reasons and what to do to get stable operation back

Has your laptop started to slow down, reboot spontaneously, or produce strange errors? Don’t rush to take it in for repairs - in 80% of cases the problem can be solved on your own without spending money on diagnostics. Laptop glitches rarely occur out of the blue: they are usually preceded by overheating, viruses, software conflicts or hardware failures. The key is to correctly identify the symptom and apply a targeted solution.

In this article we will look at the most common causes of unstable operation - from software bugs to physical damage, and we will also give step by step instructionsHow to troubleshoot problems at home. You will learn when you can get by with standard means Windows/macOS/Linux, and in some cases it is impossible to do without disassembling the case or replacing components. We will pay special attention hidden “symptoms” that 90% of users ignore, although they directly indicate a specific breakdown.

1. Diagnostics: how to determine why the laptop is glitching

Before treatment, a diagnosis must be made. Laptop glitches are divided into two large groups: software (related to OS, drivers or software) and hardware (problems with hardware). Let's figure out how to distinguish them.

Software glitches usually appear like this:

• 🖥️Laptop slows down when opening several tabs or programs (even if I could handle it before).
• 🔄 Spontaneous reboot or the appearance of a “blue screen of death” (BSOD).
• ⚠️ Errors like “DLL is missing», «The application is not responding" or "No disk access».
• 🎮 Freezes in games or when watching videos (especially if everything worked fine before).

Hardware problems often accompanied by:

• 🔥 Overheating (the case is hot, the cooler is constantly noisy at maximum).
• ⚡ Turns off when disconnected from the outlet (even if the battery shows charge).
• 💥 Artifacts on the screen (stripes, flickering, distorted colors).
• 🔊 Extraneous sounds (grinding, crackling from the case - a sign of problems with the hard drive or fan).

If the symptoms belong to the first group, start with virus checks And system cleaning. If it’s the second one, get ready for diagnostics of components (RAM, hard drive, battery).

2. Laptop slows down: 5 ways to speed up work

Slowdown is the most common complaint. Most often to blame autorun busy, fragmented disk or lack of RAM. Let's look at the solutions in order.

Step 1. Clean startup

Many programs add themselves to startup, which causes the system to waste resources on unnecessary processes. To disable them:

1. Click Ctrl + Shift + Escto open Task Manager.
2. Go to the tab Autoload.
3. Sort programs by column Impact on launch.
4. Disable everything except your antivirus and critical utilities (such as touchpad drivers).

Step 2. Disk defragmentation (HDD only!)

If you have HDD (not SSD), file fragmentation can greatly slow down the system. To defragment:

1. Open This computer, right click on the disk C:.
2. Select Properties → Service → Optimize.
3. Click Optimize and wait for completion.

Step 3. Check for viruses

Malware can not only steal data, but also load the processor, causing slowdowns. Perform a scan:

• 🛡️ Built-in Windows Defender (path: Start → Settings → Update & Security → Windows Security).
• 🔍 Free utilities: Kaspersky Virus Removal Tool, Dr.Web CureIt! or Malwarebytes.

Step 4: Add RAM

If your laptop slows down when running multiple programs, it may not have enough RAM. Check your download:

1. Open Task Manager (Ctrl + Shift + Esc).
2. Go to the tab Performance → Memory.
3. If the load is constantly close to 100%, it’s time add a RAM stick or close unnecessary programs.

Step 5: Reset Windows to Factory Settings

If all else fails, last chance - clean system installation. B Windows 10/11 this is done without losing files:

1. Open Settings → Update & Security → Recovery.
2. Click Start under the item Restore your computer to its original state.
3. Select Save my files (applications will have to be reinstalled).

3. The laptop turns itself off: reasons and solutions

If laptop turns off without warning, this is almost always associated with overheating, faulty battery or power supply. Let's look at each case.

Reason 1. Overheating

Laptops often turn off when they reach a critical temperature (usually 90–105°C). To check:

1. Install the utility HWMonitor or Core Temp.
2. Run a resource-intensive task (for example, a game or test in FurMark).
3. If the temperature of the processor or video card exceeds 90°C - needed dust cleaning.

How to clean your laptop from dust:

• 🛠️ Turn off the laptop and remove the battery (if removable).
• 💨 Use a can of compressed air to blow out the ventilation grilles and cooler.
• 🧴 Apply thermal paste to the processor and video card (if you are disassembling the case).

What happens if you don't clean your laptop?

Dust accumulation blocks airflow, causing temperatures to rise and thermal paste to dry out. In the long term this leads to processor degradation (throttling) and failure of the motherboard.

Reason 2: Bad battery

If the laptop turns off when unplugged even though the battery shows charge, the problem is with the battery. Check:

1. Battery status Command Prompt command:

   powercfg /batteryreport /output "C:\battery_report.html"

   Open the generated file and find the line Design Capacity vs Full Charge Capacity. If the difference is more than 30%, it’s time to change the battery.

2. Swelling of the case (if the battery is removable) is a sign critical wear.

Reason 3. Problems with the power supply

If the laptop turns off even when plugged in, check:

• 🔌 Power cable for damage (rubbed insulation, exposed wires).
• 🔋 The connector on the laptop - sometimes it gets loose and the contact disappears.
• 💡 Indicator on the power supply (if it doesn’t light up, the unit has burned out).

4. Blue screen of death (BSOD): error decoding

Blue Screen of Death (BSOD) is the most frightening symptom, but often it indicates a specific problem. Error code on screen (for example, IRQL_NOT_LESS_OR_EQUAL or CRITICAL_PROCESS_DIED) will help diagnose the cause.

How to read BSOD code:

1. Take a photo of the screen or write down the error code (for example, 0x0000007B).
2. Enter it into the search engine along with the word “Windows 10" or "Windows 11».
3. The most common errors and their causes:

   Error code	Reason	Solution
   IRQL_NOT_LESS_OR_EQUAL	Driver conflict or RAM corruption	Update drivers, test memory MemTest86
   CRITICAL_PROCESS_DIED	Damage to system files	Execute sfc /scannow And dism /online /cleanup-image /restorehealth
   NTFS_FILE_SYSTEM	File system or hard drive errors	Check the disk with the command chkdsk /f /r
   VIDEO_TDR_FAILURE	Video card driver failure	Update your GPU driver or downgrade to an older version
   BAD_SYSTEM_CONFIG_INFO	Corrupt registry or boot configuration	Restore the system via bcdedit or restore point

Universal steps for BSOD:

1. Boot into Safe Mode (hold F8 or Shift + Reboot in the menu Start).
2. Roll back the drivers (especially the video card and chipset) to the old version.
3. Check your RAM using the utility MemTest86 (you need to write it to a flash drive and boot from it).
4. If the error appears after updating Windows - roll back through Settings → Update & Security → Recovery.

5. The laptop does not turn on: what to do

If the laptop does not respond to the power button at all, the algorithm of actions depends on the symptoms:

Scenario 1: The indicators are not lit, the cooler is not noisy

• 🔌 Check it out power supply: Connect it to another laptop or check with a multimeter (should be 19–20V at the exit).
• 🔋 Remove the battery and try turning it on from the mains. If it works, the problem is in the battery.
• 💻 Remove the back cover and check if the power cable is disconnected from the motherboard.

Scenario 2: LEDs are on but the screen is black

• 🖥️ Connect an external monitor. If there is an image, the problem is in the matrix, cable or video card.
• 🔄 Complete reset BIOS: turn off the laptop, remove the battery, hold down the power button 30 seconds.
• 💾 Check if the flash drive or disk is forgotten in the drive - sometimes the system tries to boot from them.

Scenario 3: Laptop turns on but turns off after a few seconds

This is a sign motherboard malfunction or short circuit. Try:

1. Disconnect all peripheral devices (mouse, keyboard, flash drives).
2. Remove the RAM and clean the contacts with an eraser.
3. If it doesn’t help, take it to a service center (the elements may need to be resoldered).

6. Screen glitches: stripes, flickering, artifacts

Image problems may be caused by drivers, faulty video card or damaged matrix. Let's figure out how to distinguish one from the other.

Reason 1: Video card driver failure

If artifacts appeared after updating Windows or drivers:

1. Boot into Safe Mode.
2. Open Device Manager (Win + X → Device Manager).
3. Find Video adapters, right-click on your video card and select Properties → Roll back driver.
4. If a rollback is not available, remove the driver and install it again from the manufacturer’s website (NVIDIA, AMD or Intel).

Reason 2. Problems with the video card

If artifacts appear in games or under load, but everything is fine during idle time:

• 🎮 Check GPU temperature with utility MSI Afterburner (norm up to 85°C under load).
• 🔧 Reinstall the drivers from complete cleaning (use Display Driver Uninstaller).
• 💥 If artifacts remain - video card dies (especially relevant for laptops with NVIDIA series Maxwell/Pascal).

Reason 3. Damage to the matrix or cable

If streaks or flicker are visible even in BIOS:

• 🖥️ Connect an external monitor. If everything is fine on it, the problem is in the matrix or cable.
• 🔄 Gently press the laptop body around the screen. If the image changes, it's your fault departed plume.
• 🛠️ For repairs, you will need to disassemble and replace the cable/matrix (it is better to contact the service).

How to check the matrix for dead pixels?

Open a plain background (such as white or black) to fill the entire screen. Dead pixels will appear as colored dots. Use the website to test MonitorTests.

7. Laptop glitches after Windows update

Windows updates often break compatibility with drivers or hardware. If problems started after the update, use these tips.

Step 1: Roll back the update

1. Open Settings → Update & Security → Windows Update → View update history.
2. Click Uninstall updates.
3. Find the latest update (usually with code KBxxxxxxx) and delete it.

Step 2: System Restore

If the rollback doesn't help, go back to the restore point:

1. Enter in search Creating a restore point.
2. Click Recovery → Next and select a point before update.

Step 3. Manually installing drivers

Windows sometimes installs incorrect drivers for video card, Wi-Fi or sound. To fix:

1. Download drivers from manufacturer's official website (not through Windows Update!).
2. Remove current drivers via Device Manager (right button → Remove device).
3. Install the downloaded drivers and reboot.

Step 4: Disable automatic updates

To avoid recurring problems, pause updates:

1. Open Settings → Update & Security → Windows Update.
2. Click Advanced options → Pause updates (for a maximum of 35 days).

8. When to contact service: signs of serious damage

Not all problems can be solved on your own. Here red flagsconditions for which you should take your laptop for repair:

Symptom 1. The laptop does not turn on, although the power supply is working

If after all the manipulations (resetting BIOS, checking RAM) the laptop shows no signs of life, the following are possible:

• 💥 Failure south/north bridge on the motherboard.
• 🔥 Burnt out capacitors (swollen or with leaks).
• ⚡ Short circuit in the power circuit.

Sign 2. Extraneous sounds from the case

• 🔊 Clicking or grinding noises - sign dying HDD (copy the data immediately!).
• 💨 Whistling or buzzing — cooler malfunction (it may jam, which will lead to overheating).

Symptom 3. Artifacts on the screen in BIOS

If distortion is visible even before Windows boots, this means:

• 🖥️ Video card damage (especially relevant for laptops with NVIDIA).
• 🔌 Problems with the matrix cable (if artifacts are only on the built-in screen).

Symptom 4: The laptop turns off after 5–10 minutes of use

If the device overheats and turns off even after cleaning, it is possible:

• 🔥 Thermal paste degradation (needs replacement).
• 💻 Damage to the cooling system (crack in the heat pipe).

Symptom 5. The battery does not hold a charge (even after replacement)

If the new battery drains within an hour or the laptop only works on mains power, the problem may be:

• 🔋 Power controller on the motherboard.
• 🔌 Battery connection connector (oxidation of contacts).

FAQ: Frequently asked questions about laptop glitches

🔹 The laptop slows down after turning it on - what to do first?

Start with startup cleaning And virus checks. If it doesn’t help, check the CPU and RAM load in Task Manager. Often the brakes are caused by background processes (for example, Svchost.exe or Antimalware Service Executable).

🔹 Is it possible to clean a laptop with a vacuum cleaner?

❌ No! A vacuum cleaner creates static electricity, which can damage components. Use compressed air cylinder or a soft brush. If you are cleaning the cooler, fix the blades (for example, a toothpick) so as not to damage the bearing.

🔹 Laptop glitches after replacing thermal paste - what's wrong?

Possible reasons:

• 🔥 Too thick layer of paste (should be 0.1–0.3 mm).
• 💨 The cooler is poorly secured (check the fastenings).
• 🧴 Poor quality or expired paste was used.

Remove the cooler, remove the old paste with alcohol and apply a new thin layer.

🔹 How to check if your hard drive is dying?

Use utilities CrystalDiskInfo or HDDScan. Pay attention to the parameters:

• Reallocated Sectors Count — if the value is > 0, the disk begins to crumble.
• Current Pending Sector — bad sectors that have not yet been reassigned.
• UDMA CRC Error Count - problems with the SATA cable.

If at least one parameter is in status Warning or Bad — copy the data urgently!

🔹 The laptop only glitches on the battery, but works fine when plugged in - what’s the matter?

Most likely the problem is:

• 🔋 Worn out battery (capacity dropped below 40% of nominal).
• 🔌 Power controller (distributes the load incorrectly).
• 💻 Power plan settings (Windows may limit battery performance.)

Check the battery report with the command powercfg /batteryreport and replace the battery if necessary.