How to Resolve Common Windows Errors (2026)

The Blue Screen of Death (BSOD) appears when Windows encounters a critical system error that cannot be recovered. The computer automatically restarts or stays frozen on the blue screen with an error message.

Solution 1: Note the Error Code

On the blue screen, note the error code (e.g., STOP: 0x0000007E, IRQL_NOT_LESS_OR_EQUAL, etc.). This code helps identify the cause:

1. When the blue screen appears, write down the exact error code
2. Search the specific code on the internet
3. Common codes include issues with drivers, RAM, or hardware

Solution 2: Check Hardware

1. Turn off the computer completely
2. Check if all cables are properly connected
3. Test RAM with diagnostic tools
4. Check processor temperature (overheating can cause BSOD)
5. Test the hard drive for errors

Solution 3: Update Drivers

1. Start Windows in Safe Mode
2. Update critical drivers (video, network, audio)
3. Uninstall recent problematic drivers
4. Use Device Manager to check for conflicts

• Black screen upon startup
• Constant reboot loop
• Error message during boot
• Windows starts but freezes on the loading screen

Use Automatic Repair

1. Restart the computer 3 times during startup to enter Automatic Repair
2. Or use Windows installation media and choose "Repair your computer"
3. Select "Startup Repair"
4. Wait for Windows to try and repair automatically

System Restore

1. On the repair screen, choose "Advanced Options"
2. Go to "Troubleshoot" > "Advanced Options"
3. Select "System Restore"
4. Choose a restore point prior to the problem
5. Confirm and wait for the restoration

Use Command Prompt to Repair

1. On the repair screen, choose Command Prompt
2. Execute: sfc /scannow (checks file integrity)
3. Execute: chkdsk C: /f /r (checks and repairs disk)
4. Execute: bootrec /fixmbr and bootrec /fixboot
5. Restart the computer

• Overheating
• Insufficient or faulty RAM
• Hard drive issues
• Corrupted drivers
• Conflicting programs
• Viruses or malware

Check Temperatures

1. Use tools like HWMonitor to check temperatures
2. CPU above 80°C or GPU above 85°C indicates overheating
3. Clean dust from fans and heat sinks
4. Check if fans are working
5. Consider replacing processor thermal paste

Test RAM

1. Use the Windows Memory Diagnostic tool
2. Or use MemTest86 for a complete test
3. If errors are found, replace the RAM

Check Hard Drive

1. Run disk error checking
2. Monitor disk SMART for signs of imminent failure
3. Consider immediate backup if the disk is failing

Generally indicates that a program or system file was deleted or corrupted:

1. Execute sfc /scannow in Command Prompt as Administrator
2. Reinstall the program giving the error
3. Check if antivirus hasn't deleted a legitimate file

Permission or access problem:

1. Right-click > Run as Administrator
2. Check file properties > Security > Permissions
3. Ensure your account has necessary permissions

Could be a compatibility issue or corrupted file:

1. Run in compatibility mode
2. Check if the program is compatible with your version of Windows
3. Reinstall the program
4. Check for malware

Checks and repairs corrupted system files:

1. Open Command Prompt as Administrator
2. Execute: sfc /scannow
3. Wait for the verification (may take 30 minutes or more)
4. Windows will try to repair corrupted files automatically

Repairs the Windows image when SFC fails:

1. Command Prompt as Administrator
2. Execute: DISM /Online /Cleanup-Image /RestoreHealth
3. Wait for the process (may take a long time and requires internet)
4. Afterward, execute SFC again

Logs all system errors and events:

1. Press Windows + R, type eventvwr.msc
2. Go to Windows Logs > System
3. Look for errors (red icon)
4. Click on errors to see details
5. Use the details to search for specific solutions

Driver errors are one of the most common causes of Windows problems:

Solutions for Driver Issues

1. Open Device Manager (devmgmt.msc)
2. Look for devices with a yellow icon (alert) or red (error)
3. Right-click and select "Update driver"
4. Select "Search automatically for drivers"
5. If the problem persists, uninstall and reinstall the driver
6. Visit the manufacturer's website to download latest drivers
7. For video drivers, use DDU (Display Driver Uninstaller) for a clean sweep before reinstalling

Driver Verifier

To identify problematic drivers:

1. Open Command Prompt as Administrator
2. Execute: verifier
3. Follow the wizard to select drivers to check
4. Restart the computer and watch for errors
5. This process might take time and cause unexpected reboots
6. Execute verifier /reset to deactivate after diagnosis

Errors related to the system's startup process:

Solutions for Boot Issues

1. In Command Prompt as Administrator, execute:
2. bootrec /fixmbr - Repairs the Master Boot Record
3. bootrec /fixboot - Repairs the boot sector
4. bootrec /rebuildbcd - Rebuilds the boot configuration database
5. Ensure the boot drive is correctly set in BIOS/UEFI
6. Verify disk integrity with chkdsk C: /f /r
7. For UEFI systems, check if the file \EFI\Microsoft\Boot\BCD exists

Boot Diagnostic Tools

Check the status of the boot system:

1. Execute msinfo32 to check boot status
2. Use bcdedit to view and edit boot settings
3. Check if the boot drive is set as active
4. Analyze boot time with xperf to identify bottlenecks

Registry problems can cause various errors:

Solutions for Registry Errors

1. Execute sfc /scannow first to check system files
2. Use Registry Editor (regedit) carefully to navigate the registry
3. Backup the registry before making changes
4. Execute sfc /scanfile=filename to repair specific files
5. Use dism /online /cleanup-image /scanhealth to check image integrity
6. If necessary, run sfc /offlinewim to repair offline image

System Integrity Verification

Advanced methods to check and repair the system:

1. Verify system integrity with sfc /verifyonly
2. Use sigverif to check digital signatures of files
3. Run dism /online /cleanup-image /checkhealth to check image health
4. Use msconfig to check startup settings

Many Windows errors are caused by hardware problems:

RAM Tests

1. Use Windows Memory Diagnostic (mdsched.exe)
2. Run MemTest86+ on a bootable USB for a full test
3. Test each RAM module individually
4. Check memory settings in BIOS/UEFI
5. Temporarily reduce RAM speed to test stability

Hard Drive Tests

Storage integrity verification:

1. Run chkdsk C: /f /r to check for bad sectors
2. Use CrystalDiskInfo to monitor disk SMART attributes
3. Execute wmic diskdrive get status to check drive status
4. Use tools like HD Tune for comprehensive drive testing
5. Perform immediate backup if drive issues are detected

Temperature and Overheating Tests

Thermal monitoring to prevent problems:

1. Use HWMonitor, Core Temp, or SpeedFan to check temperatures
2. Monitor CPU, GPU, and hard drive temperatures
3. Critical values: CPU > 85°C, GPU > 85°C, HDD > 50°C
4. Check if fans are working correctly
5. Clean the computer to remove dust that hinders cooling

Windows includes various advanced diagnostic tools:

Windows Memory Diagnostic

Built-in system memory test:

1. Run mdsched.exe in Command Prompt
2. Choose "Restart now and check for problems"
3. The test will run on next startup
4. Results will be available in Event Viewer

Reliability Monitor

System reliability monitoring:

1. Execute perfmon /rel to open Reliability Monitor
2. Check the system reliability score
3. Analyze recent critical events and warnings
4. Compare events with the date and time of issues

Performance Monitor

Advanced performance monitoring:

1. Execute perfmon to open Performance Monitor
2. Configure counters for CPU, RAM, Disk, and Network
3. Analyze usage patterns during problems
4. Export data for detailed analysis

• Errors that persist after trying all basic solutions
• Hardware issues requiring component replacement
• Data loss requiring professional recovery
• Errors indicating imminent hardware failure
• Situations where you don't feel confident trying solutions alone