Blue screen when starting laptop: how to fix BSOD on Windows 10/11

Blue screen of death (BSOD) when turning on the laptop is one of the most frightening errors for users. The screen goes blank, a blue background appears with white text or a QR code, and the system refuses to boot further. In 80% of cases, the problem is solved without contacting a service center, but for this you need to correctly diagnose the cause.

In this article we will look at all possible reasons blue screen on laptops ASUS, Lenovo, HP, Acer and other brands - from driver failures to hardware faults. You will learn how to decipher BSOD error code, what actions to take first, and when exactly is the time to take the device in for repair. For convenience, we have collected frequently asked questions at the end of the material and added a table with a breakdown of popular error codes.

1. What is a blue screen of death (BSOD) and why does it appear?

Blue screen (Blue Screen of Death, aka STOP error) is a Windows crash that occurs when the system detects a critical error that threatens data integrity. Unlike normal crashes, BSOD is always accompanied by generating a memory dump (file MEMORY.DMP or minidump), which helps diagnose the problem.

The main reasons for a blue screen to appear when starting a laptop:

• 🔹 Driver conflict - especially after updating Windows or installing new software (for example, antivirus).
• 🔹 Damage to system files - due to a sudden power outage, viruses or hard drive failure.
• 🔹 Hardware faults: problems with RAM (RAM), hard drive (HDD/SSD), motherboard or processor overheating.
• 🔹 BIOS/UEFI failures - for example, after an unsuccessful update or reset.
• 🔹 Conflict with peripheral devices — gadgets connected via USB (printers, external drives) can block loading.

Important: if a blue screen appears only on cold start (after a long period of inactivity), and when rebooting everything works fine - the problem is 90% likely hardware (most often in motherboard capacitors or cooling).

2. How to read the BSOD error code and find a solution

Blue screen always displays error code (For example, CRITICAL_PROCESS_DIED, IRQL_NOT_LESS_OR_EQUAL) and sometimes - the name of the problematic file (usually with the extension .sys). This data is the key to diagnosis.

What to do:

1. Take a photo of the screen with your phone or write down the error code. If the screen disappears too quickly, disable automatic reboot:

   Нажмите Win + R → введите sysdm.cpl → перейдите на вкладку Дополнительно → в разделе Загрузка и восстановление нажмите Параметры → снимите галочку с Выполнить автоматическую перезагрузку.

2. Check the code in the table below or use the official Microsoft tool − Bug Check Code Reference.

BSOD error code	Reason	Solution
CRITICAL_PROCESS_DIED	A critical system process has been terminated suddenly (often due to file corruption or driver failure).	Run sfc /scannow And DISM /Online /Cleanup-Image /RestoreHealth in safe mode.
IRQL_NOT_LESS_OR_EQUAL	Problem with drivers (especially network drivers, video cards) or RAM.	Update your drivers manually or roll them back. Check RAM using MemTest86.
SYSTEM_THREAD_EXCEPTION_NOT_HANDLED	Driver failure (often the problematic file is indicated, for example nvlddmkm.sys for NVIDIA).	Reinstall the driver for the problematic device. For video cards use Display Driver Uninstaller (DDU).
NTFS_FILE_SYSTEM or FAT_FILE_SYSTEM	Damage to the file system on your hard drive or SSD.	Run chkdsk /f /r from the command line in recovery mode.
MEMORY_MANAGEMENT	Memory management error (RAM or virtual memory).	Check the RAM sticks, test them one at a time. Increase the swap file.

If the error code is not listed or the screen disappears too quickly, use the utility BlueScreenView (works after Windows boots). It will show all memory dumps and their associated drivers.

3. First steps: what to do immediately after the BSOD appears

Before you delve into settings or disassemble your laptop, follow these steps:

If the laptop does not turn on at all (even the manufacturer’s logo does not appear), the problem is most likely in:

• 🔋 Power supply — check the cable and socket, try a different adapter.
• 🔌 RAM — remove the RAM sticks and clean the contacts with an eraser.
• 💽 Hard drive - listen to see if it makes clicking or grinding noises.

⚠️ Attention: If you updated the BIOS before the blue screen appeared, do not try to re-flash it without a specialist - this can completely kill the motherboard. In this case, contact the service center with a request to reflash the chip with a programmer.

4. Recover Windows without losing data

If the laptop somehow responds to the power button, but does not boot beyond the blue screen, try the following recovery methods:

4.1. Boot in Safe Mode

Safe mode allows you to start Windows with a minimal set of drivers. How to get there:

1. On the login screen (if it appears), press and hold Shift and press Reboot.
2. After reboot select Troubleshooting → Advanced Options → Boot Options → Restart.
3. Click F4 (or 4) to start in safe mode.

In safe mode:

• 🔄 Roll back the system via Control Panel → Recovery → Run System Restore.
• 🗑️ Remove recently installed programs or drivers.
• 🛠️ Launch command prompt as administrator and run:

  sfc /scannow
  DISM /Online /Cleanup-Image /RestoreHealth

4.2. Recovery via bootable USB flash drive

If Safe Mode is not available, create a bootable USB flash drive with Windows on another PC:

1. Download Media Creation Tool from the Microsoft website and create installation media.
2. Boot from the flash drive (you may need to change the boot priority in the BIOS, key F2/Del/Esc).
3. On the installation screen, select System Restore → Troubleshooting.
4. Use options:
   • 🔧 Startup Recovery — automatic error correction.
   • 📥 System Restore — rollback to a restore point.
   • 💾 Command line — for manual correction (see commands above).

⚠️ Attention: If during recovery the system prompts delete all data - this is a sign of serious damage to the partition. In this case, first remove the hard drive and copy important files to another PC using an adapter USB-SATA.

5. Checking hardware components

If software methods do not help, the problem lies in the hardware. Let's look at the most vulnerable components:

5.1. Diagnostics of random access memory (RAM)

Memory errors are one of the most common causes of BSOD. There are two ways to check RAM:

• 🔍 Built-in Windows utility:
  1. Enter in search mdsched.exe and run as administrator.
  2. Select Reboot and check.
  3. After the test, the system will show the results (if there are no errors, the memory is fine).
• 🔧 MemTest86 (for deep checking):
  1. Download the image from the site memtest86.com.
  2. Write it to a flash drive using Rufus.
  3. Boot from the flash drive and leave the test for 4-8 passes (minimum 2 hours).

If the test shows errors:

• 🧹 Clean the contacts of the RAM strips with an eraser and blow out the slots with compressed air.
• 🔄 Swap the planks or check them one by one (if there are several modules).
• 🛒 If errors remain, replace the faulty bar.

5.2. Checking the hard drive (HDD/SSD)

Bad sectors or worn-out drives often lead to blue screens. Diagnostics:

• 💽 Checking SMART status:
  • Use utilities CrystalDiskInfo or HDDScan (in safe mode or from a bootable USB flash drive).
  • If the status Bad or there are errors in the attributes Reallocated Sectors Count, Uncorrectable Errors - it's time to change the disk.
• 🔄 File system check:

  chkdsk C: /f /r

  (replace C: to the system drive letter).

For SSD also check the wear percentage (Wear Leveling Count) - if it exceeds 80%, the drive will soon fail.

How to save data from a dying disk?

If the disk is still detected by the system, but produces errors, use utilities HDD Regenerator (for HDD) or Victoria to transfer data to another medium. If the drive is not detected at all, connect it to another PC via USB adapter and try to read the data with R-Studio or TestDisk.

5.3. Overheating diagnostics

An overheating processor or graphics card can cause random BSODs, especially on laptops with dust-clogged cooling systems. How to check:

• 🌡️ Boot into BIOS and look at the temperature in the section Hardware Monitor (norm: up to 60°C when idle).
• 🔥 If the temperature is above 80°C, disassemble the laptop, clean the radiator and fan from dust, replace the thermal paste.
• 💨 Check the operation of the cooler - if it does not rotate, replacement is required.

⚠️ Attention: On laptops HP Pavilion, Lenovo IdeaPad and some models ASUS a common problem with Detachment of GPU chips (especially NVIDIA). This appears as a BSOD with the code VIDEO_TDR_FAILURE and requires resoldering at a service center.

6. BIOS update and factory reset

Incorrect BIOS settings or an outdated version can conflict with hardware and cause blue screens. How to update BIOS safely:

1. Find out the exact model of the motherboard (for example, using CPU-Z in Windows or on the sticker inside the laptop).
2. Download the latest BIOS from the manufacturer's official website (for example, support.asus.com for ASUS).
3. Unpack the archive and follow the instructions:
   • 🔄 For most laptops, updating occurs through a utility in Windows (for example, MyASUS, Lenovo Vantage).
   • 💾 On some models (Dell, HP) you need to create a bootable USB flash drive with BIOS and update via DOS.

Important: Never update BIOS over Wi-Fi or when the battery is low. Use only a wired internet connection and power supply.

If the laptop does not turn on after updating the BIOS:

• 🔋 Remove the battery and power adapter, press the power button for 30 seconds (residual charge reset).
• 🔄 Try rolling back the BIOS to the previous version (if you have a backup).
• 🛠️ As a last resort, contact the service to reflash the chip with a programmer.

7. When to contact the service center

Not all problems can be solved on your own. Contact a specialist if:

• 💥Laptop doesn't turn on at all (there is no response to the power button, the indicators do not light up).
• 🔥Appears burning smell or traces of melting are visible on the motherboard.
• 💽 Hard drive clicks or is not detected either in the BIOS or on another PC.
• 🔄 BSOD appears even after Windows reinstallation and replacement of all components except the motherboard.
• 🔧 Required soldering of components (for example, south/north bridge, video chip).

Average cost of repairs in service:

Fault type	Approximate price (₽)
Replacing thermal paste and cleaning dust	1 500 – 3 000
Replacing RAM	2,000 – 5,000 (including module cost)
Replacing a hard drive with an SSD	3,000 – 8,000 (depending on capacity)
Re-soldering of the video chip (for discrete graphics)	5 000 – 15 000
Motherboard repair/replacement	10 000 – 30 000

Before visiting the service:

• 📋 Write down any BSOD error codes that appear.
• 💾 Make a backup copy of your data if the laptop somehow turns on.
• 🔍 Check whether the service provides a guarantee for repairs (good centers provide a guarantee of 3 months).

FAQ: Frequently asked questions about a blue screen on a laptop

❓ The laptop turns on, but immediately a blue screen appears and reboots. What to do?

This is a typical sign boot sector damage or driver conflict. Try:

1. Load into safe mode and roll back the drivers.
2. Restore the bootloader via the command line:

   bootrec /fixmbr
   bootrec /fixboot
   bootrec /scanos
   bootrec /rebuildbcd

3. If it doesn’t help, reinstall Windows while saving the data (select the “Update” option during installation).

❓ Can a virus cause a blue screen?

Yes, some viruses (for example, rootkits) damage system files or drivers, which leads to BSOD. What to do:

• Boot from LiveCD (For example, Kaspersky Rescue Disk) and scan the system.
• Remove suspicious programs from Control Panel → Programs and Features.
• Check the task scheduler (taskschd.msc) for the presence of unknown tasks.

If a virus has blocked access to the system, the only reliable way is reinstalling Windows with disk formatting.

❓ The blue screen appears only when connected to Wi-Fi. What's the matter?

This is a typical problem with network card driver. Solutions:

• Update the Wi-Fi adapter driver manually from the manufacturer's website (not through Device Manager!).
• Roll back the driver to a previous version (in Device Manager, select Properties → Driver → Roll Back).
• If used Killer Networking (found on laptops MSI, Alienware), remove it and install the standard driver from Intel or Realtek.
• Try connecting via an Ethernet cable - if the BSOD disappears, the problem is definitely in the Wi-Fi module.

❓ The laptop displays a blue screen after replacing the SSD. What's wrong?

Possible reasons:

• 🔌 SSD incompatibility with controller - some older laptops do not support NVMe- drives. Check your model's specifications.
• 🔄 Incorrect Windows installation — if you cloned a system from HDD to SSD, errors may have occurred. It's better to install Windows cleanly.
• 🔋 Lack of nutrition — SSD consumes more energy when recording. Try disconnecting other USB devices.
• 🛠️ BIOS failure — update the BIOS to the latest version or reset the settings to factory settings.

If the SSD is not detected at all, check whether it is connected correctly (some laptops require an adapter for M.2 SATA instead of NVMe).

❓ Is it possible to replace the thermal paste yourself if the laptop overheats and gives BSOD?

Yes, but you need to be careful:

1. Buy high-quality thermal paste (For example, Arctic MX-6, Noctua NT-H2).
2. Disassemble your laptop,following the manual for your model (on YouTube there are disassemblies for most laptops).
3. Clean old paste from the processor and video card lint-free cloth and isopropyl alcohol.
4. Apply new paste thin layer (pea-sized drop).
5. Check the fan operation - if it does not rotate, replace it.

⚠️ Attention: On laptops Apple MacBook, Microsoft Surface and some ultrabooks (Dell XPS, HP Spectre) disassembly may void the warranty due to seals.