What might cause the "IRQL_NOT_LESS_OR_EQUAL" error?

I’ve just started experiencing some problems with my computer lately. A few days ago, while surfing the internet, I let it idle for a little while and went to get some chow ( to eat, that is ). After I was done, I returned to the desk and saw it went into standby. I’ve moved the mouse a little, just to "wake" it up. After that, I wanted to search something on Google, using their browser ( Chrome ). Immediately after typing the keywords in the search engine and hitting enter, the computer restarted, without any apparent reason and without displaying any error.

So, I let it do its thing, boot up and get into Windows, as normal. Which it did. Again, no errors showed up. Then, I’ve decided to scan it for viruses, spyware and hardware related issues ( hard drive, motherboard etc ). All the tests came up as negative: no viruses, malware, or technical problems. Now, what I want to know is, what might cause this error to pop up? Since the first time this has happened, it kept occurring the following days, as well ( including today ).

From what I’ve read, it can be a RAM related issue. But, of course, other factors might be the culprits. Any suggestions, anyone? I appreciate any answer I can get! Thanks!

PS: I also got some numbers, along with the above mentioned error, which I have no idea what it mean, since I don’t "speak" computer language. 🙂 Here it are:

1. STOP: 0x0000000A ( 0x00040000, 0x00000002, 0x00000001, 0x804DBC9A ) and
2. STOP: 0x0000000A ( 0x00000058, 0x00000002, 0x00000001, 0x804DBC9A )

PS 2: I have just reinstalled the Windows ( XP ) about a week ago, so I don’t know if this error has anything to do with that, since the OS it’s fresh..

That is normally an error with one of the hardware drivers on the PC. See if you have a restore point from before the problem and go back to it. Hopefully that will remove whatever driver is causing the issue.

2 Responses to “What might cause the "IRQL_NOT_LESS_OR_EQUAL" error?”

  1. dewcoons 14. Apr, 2011 at 12:19 pm #

    That is normally an error with one of the hardware drivers on the PC. See if you have a restore point from before the problem and go back to it. Hopefully that will remove whatever driver is causing the issue.
    References :

  2. Rankine Zero 14. Apr, 2011 at 12:47 pm #

    My guess is that when you reinstalled windows, you also updated the drivers for your hardware.
    One of the things that can trigger this error is a driver issue.

    Finding out which driver is involved will not be easy, but you can try to google IRQL_NOT_LESS_OR_EQUAL in combination with each piece of hardware requiring a driver, to see if there are known issues with certain driver versions, then try a different version.
    References :

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