Driver irql not less or equal: fix errors - how it works

If you see the blue screen error "Driver irql not less or equal" on your PC or notebook, you can usually fix it yourself. In this practical tip, we will show you what to do in this case.

How to fix Driver irql not less or equal blue screen error

There is no clear cause for this error, the reasons can be different. In some cases the problem lies with the driver of the hardware, but often also with the hardware itself.

• First of all, you should rule out an error in the driver. Make sure that all drivers for your hardware are up to date. Here you will find instructions on how to update the drivers.
• Basically, it is advisable that you install all updates for your PC and regularly remove dust and dirt from the PC so that the fan gets enough fresh air.

Hardware check on a blue screen

In many cases there is a problem with the hardware. To analyze the source of the error, you must unscrew the PC and disconnect the hardware and replace if necessary. Laypeople should get support.

1. Turn off the PC and disconnect it from the power. Briefly touch an unpainted part of a heater to avoid short circuits on the hardware.
2. Loose cables can cause the problem. Find the problem first with the hard disk and the graphics card. Disconnect all data cables and all power cables from the hard drive and graphics card that are connected to the PC. Then re-establish the connection and restart the PC.
3. If the problem persists, start the PC without the graphics card. If this does not work either, the hard disk may be faulty.
4. However, the PC cannot be started without a hard disk. In this case, you can isolate the error by testing your hardware in another PC. If the error also occurs in another PC after replacing the hard disk, the error has been found.
5. The RAM memory can also produce a blue screen. If several RAM bars are installed, only start the PC with one bar at a time to check whether one of them is defective.
6. If the processor gets too hot, it can also cause the said error. With the free tool Core Temp you can keep an eye on the temperature of the processor and thus narrow down the error. Just let the PC run for a long time and watch the heat build up.

You can find more common causes of a blue screen in our next post.