Multiple Bsods over the past month mainly "irql not less or equal"

Hi there, I've been having problems with an inherited computer recently, I got it after the owner said they were experiencing problems and the repair guys estimated it would cost as much as a computer to fix so they bought a new one.

I think this was just a case of lazyness by the repair guys so I took it home and tried to start it. it wouldn't boot into windows so formated I loaded windows 7 U 66 and boom it worked.

Now I've had a few BSODS on it and updated what I could with different websites from microsoft and HP I can't figure out what is causing it
ranging from "irql not less or equal" to "fage fault in non paged area" and "bad pool header"

Any Ideas?

Please run a SFC.
{Option 2}

SFC /SCANNOW Command - System File Checker

Did the scan once, it asked me to restart after doing so I ran it again and this time it said no errors in the integrity. So far so good, no BSODs, but they usually come out of nowhere so I can't even tell.
I'll keep you updated and let you know if it happens again.
Thanks for your help

OK then we wait for the next crash...


We do need the DMP file as it contains the only record of the sequence of events leading up to the crash, what drivers were loaded, and what was responsible.

If you are overclocking STOP

You may be able to get the DMP files without crashing by booting into safe mode (F8) with networking.

To enable us to assist you with your computer's BSOD symptoms, upload the contents of your "\Windows\Minidump" folder.

The procedure:

* Copy the contents of \Windows\Minidump to another (temporary) location somewhere on your machine.
* Zip up the copy.
* Attach the ZIP archive to your post using the "paperclip" (file attachments) button.
*If the files are too large please upload them to a file sharing service like "Rapidshare" and put a link to them in your reply.

To ensure minidumps are enabled:

* Go to Start, in the Search Box type: sysdm.cpl, press Enter.
* Under the Advanced tab, click on the Startup and Recovery Settings... button.
* Ensure that Automatically restart is unchecked.
* Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box (the 256kb varies).
* Ensure that the Small Dump Directory is listed as %systemroot%\Minidump.
* OK your way out.
* Reboot if changes have been made.

I have included the dmp files in the first post, if I have the next crash, I'll update those files :) thanks