The IRQ error in BSOD usually means that there is either a driver error or a hardware issue. It usually means that the driver or hardware has tried to share an IRQ that its not meant to and windows protects itself by crashing and debugging (a BSOD).

I suggest going into Safe Mode and looking at the Event Viewer (eventvwr) to see if the issue is logged there. Every BSOD should enter a note in the system log stating that there was an unexpected shutdown and why.

Also whilst in Safe Mode deinstall items like you sound card, video card and deinstall any software. Then reboot and allow the hardware to be picked back up again by Plug and Prey. Lastly get the latest drivers for the hardware and install it.

After that, it still happens, then I suggest you have a dodgy piece of hardware...

But before the expenditure of getting the HW replaced, go to windows updates and download all the updates until there are none left, and if the issue still exists, then rebuild your PC.

Hope this helps...