A week ago i formatted my laptop with my unattended Vista installation DVD and all went smooth as usual.

Things got bad as soon as i started to configure settings and installing some programs because i started to get BSOD after a few minutes of using the computer.

The error message: IRQL_NOT_LESS_OR_EQUAL.

I thought it was the latest Intel graphics drivers because that was the only thing i updated on my VistaUA (Vista Unattended) disc. I replaced them with the previous version and ran the installation again. Result: BSOD again in a few minutes.

I disabled drivers, startup programs and services but nothing seemed to fix it. I was formatting other computers and i unplugged my Western Digital 80Gb External USB hard drive to install programs on those computers.

I noticed that my laptop was able to function properly and longer without any errors. I plugged my HDD again, restarted windows to make a test and i got the same BSOD again.

I tried to boot my desktop computer with the same external drive connected and the same thing happened: BSOD after a minute or two.

If i connect the drive after Windows is loaded there is no problem and i can use the drive as i normally do.

I’ve searched the web for solutions but i didn’t find any real answers to the problem. I even looked at Microsoft Knowledge Base but came out empty.

So, if you’re having this particular problem (i haven’t tried my external hdd in WinXP) check to see if you have external devices connected. Maybe a windows update introduced this kind of behavior because i have been using this drive for about two and half years without any single issue.

If i find a solution i will post it for people that is suffering the same thing as me. If someone has some solution, please post it.


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