How To Fix IRQL_NOT_LESS_OR_EQUAL in Windows 8.1 (Part 2)
“Hi Wally, My computer shows the BSOD sometimes. It was fine before I upgraded to Windows 8.1, it says IRQL_NOT_LESS_OR_EQUAL!” - Jeremy L., USA
Before addressing any computer issue, I always recommend scanning and repairing any underlying problems affecting your PC health and performance:
- Step 1 : Download PC Repair & Optimizer Tool (WinThruster for Win 10, 8, 7, Vista, XP and 2000 – Microsoft Gold Certified).
- Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
- Step 3 : Click “Repair All” to fix all issues.
Setting up weekly (or daily) automatic scans will help prevent system problems and keep your PC running fast and trouble-free.
Disable Memory Caching
Disabling the memory cache may solve this problem because this is a memory related issue. Memory Catching is disabled from the computer’s BIOS setup.
Restart the computer and when the computer is turning-on, repeatedly press F2 to enter the BIOS setup (if F2 doesn’t work than restart the computer again and pay attention to the screen for the instructions for the BIOS to appear).
Once in the BIOS, don’t change any setting that you don’t know. Look for the Memory Caching feature and turn it off. Look online for instructions for your computer’s BIOS.
Remove Peripheral Devices
This includes all USB devices and basically any other device which is not required for your computer to run (e.g. keyboard). Remove any memory cards in the memory card slot, and basically anything that the computer can do without. Remove these devices and than see if the error appears again.
Use Clean Boot
Clean Boot starts Windows 8.1 with the least amount of processes and services. This way third-party drivers won’t be loaded and startup programs won’t start. If the computer starts and there’s no problem than it was probably one of those startup programs that was causing the IRQL_NOT_LESS_OR_EQUAL error. You can root-out the problem by doing the following.
- Press the Windows Key+R > Type msconfig > Press Enter
- Take note of the software in the Startup tab, the list should appear when you click the link that says Open Task Manager.
- If you don’t need any program in the Startup tab, than you should right-click and click Disable (so it won’t start when the computer starts)
- Click the Boot tab > check Safe Boot > click OK
- The Computer should restart
If disabling startup programs does not solve the problem than it was probably a device driver. You can either update device drivers manually or by using a utility which will download and install them for you.
Update To Windows 8.1 Again
If all else fails, try to update to Windows 8.1 again but for that you will first need to get back to Windows 8. This is easy of you have already created a System Image Backup of Windows 8. You can restore that backup to bring back Windows 8, and than update to Windows 8.1 again.
- Boot the computer with the Windows 8 Installation Disk by inserting the disk and restarting the computer.
- Get to Troubleshoot > Advanced options, and navigate to Restore System Image.
A Clean Install Of Windows
If you don’t have a system restore image to restore than do a clean install of Windows 8. You can learn more about How To install Windows 8 (the setup for Widows 8.1 should be almost completely identical in case you want to install Windows 8.1 directly).
Once Windows 8 is installed you should install Windows updates, disable antivirus software, and disable device drivers before upgrading to Windows 8.1
If you follow all of these steps, you should be able to fix the IRQL_NOT_LESS_OR_EQUAL error for sure.
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Is Your PC Healthy?
I always recommend to my readers to regularly use a trusted registry cleaner and optimizer such as WinThruster or CCleaner. Many problems that you encounter can be attributed to a corrupt and bloated registry.
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