Did your Windows 7 computer experience a blue screen of death today with a cryptic “irql_not_less_or_equal” message? Find out what might be happening and if a fix is available.

Blue screen of death. We’ve all seen it and dread when it happens. For many Windows 7 users across the globe the blue screen of death showed up Monday. But what is causing it? How can it be fixed?

While there’s no confirmed reason for the issue, there seems to be a connection between the Windows 7 blue screen of death and the latest Avast anti-virus update. On Twitter numerous users are reporting issues with a blue screen of death on Windows 7 computers after installing the latest Avast update, including clients of OnByte Technologies, a Malaga, Spain based computer repair company.

It is unclear as to why Avast’s latest update is causing so many problems for Windows 7, but apparently this isn’t the first time it’s happened. Several posts on Tom’s Hardware Forums indicate issues with an Avast update has caused the blue screen of death for users before. The issue seems to be due to out of date or incompatible drivers.

If you check the writing on the blue screen of death and notice “iqrl_not_less_or_equal” is written in there somewhere, you are likely running into the same problem as these other users.

How To Fix Blue Screen Of Death On Windows 7 (irql_not_less_or_equal)

Searching some Windows Support forum posts, it appears that when one of these “irql_not_less_or_equal” issues appears, the best thing to do is uninstall the software causing the problem and then your computer should return to normal. In this case, it would be the new Avast update. We can’t be certain this will fix the issues on our computer, but it may be worth a try.

Several Avast users have queried the company on Twitter about the blue screen of death they are receiving, but thus far, the company has yet to respond. As we learn more about the issue and how users can fix it, we’ll be sure to update this post.