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Solve irql_not_less_or_equal error in xp and Windows 7



irql_not_less_or_equal in Xp or Windows 7 is mainly due to driver mismatch or incompatible hardware and software - might be video drivers, graphics driver, NIC (Network Interface Card) or any other driver which crashes your system and give you blue screen with some hex decimal codes.Technically it means that some driver has tried to access some protected memory area to which it has no permission.This is not serious - Windows operating system do this to prevent permanent damage to your hardware.You can very easily correct this by finding the recent hardware or software which has caused irql_not_less_or_equal error.



The actual Format of the error is -

IRQL_NOT_LESS_OR_EQUAL
**** STOP 0x0000000A (0x00000010, 0x00000002, 0x00000000, 0x8051AA58)

Possible Reasons

The exact reason will be different for different systems but here are the most probable reasons
  1. Hardware - Damaged Ram(sometimes mismatched ram) or Graphic Card
  2. Drivers - Incompatible or outdated drivers
  3. Antivirus - Two or more antivirus or spyware programs together.
  4. Windows Update
  5. CPU Over heating
Our main task will be to find the problem which let to irql_not_less_or_equal error and will try to revert back by bringing your pc to previous state.

Tip 1 #

If you have recently added a new Hardware like RAM or NIC card printer or sound card remove them - restart and see if the problem exist.If YES the move to Tip 2#
There was a topic is some forum where  guy has the same error due to RAM mismatch because of different clock speed .If you have recently added a new RAM stick make sure that both are of some configuration.

My suggestion is to run the MS Memtest in extended mode or the Memtest 86 overnight and see if they report any errors in the morning.
http://oca.microsoft.com/en/windiag.asp
http://www.memtest86.com/

Tip 2 #

Restart your Windows in the safe mode ( Press F8 durring boot process), safe mode has minimum number of drivers installed.Now Go to device manager ( Right click on 'My Computer' Properties > Click on Hardware tab >Click 'Device manager' button.
Device manager is a list of all drivers installed with in your system.
Now look for Exclamation mark in device manager which generally shows damaged / corrupted or the drivers for the device are not installed properly.
This will be the problem,uninstall and re-install (or update if the update is available) the problematic driver .
Restart Your computer.

Tip 3#

If you are using more than one antivirus or spyware programs uninstall all and keep 1 of your choice because. There may be a possibility that they try to access same work space at the same time which let to irql_not_less_or_equal error (in windows xp or Windows 7).

Tip 4 #

irql_not_less_or_equal in Windows 7 or Xp could be a result of recent windows update.Roll back to previous version by going to Start > 'All Programs' > 'Accessories' > 'System Tools'  > 'System restore' and choose previous backup date to rollback to previous stable condition.

Tip5 #

Overheating CPU can be a silent culprit some times. Reboot your system and go to your BIOS and check your system temperature. Check to see if the SMPS fan is working or if you are using Dedicated graphic card check to see if the temp is in limited range.
Remove your Graphic card, uninstall any driver to see your problem gone.

Tip6 #

If you continue to receive this error message, you may need to flash the BIOS on the computer's motherboard. Please refer to the manufacturer of your computer or the Web site for the motherboard for information about how to do this.

Specific problem to NVIDIA video cards

This problem occurs because your computer has an Nvidia video card using the video driver Nv4.sys.To check if your system uses one of these drivers, do the following:

  • Open Device Manager.
  • Under the Graphics icon, select the graphics card , click on the right mouse button, then click Properties .
  • Tab Driver , click on the details of the driver to display the names of the pilots.
  • If multiple adapters are installed, repeat these steps for each.

To solve this problem, get an updated driver from your video card manufacturer or visit NVIDIA at the following address: http://www.nvidia.com.

Did this Tutorial Solved your problem? If you have any more ideas then please use the comment box to help others like us !! 

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