Computer crashing repeatedly with 'IRQL_NOT_LESS_OR_EQUAL'

My computer recently crashed with weird multicoloured horizontal lines, forcing me to restart. Since then it's been crashing with the BSOD in the title after around 5-10 minutes. I've cleaned the inside with air and checked for malware/viruses with no change in the situation. Any help with this would be most appreciated! I've had that BSOD before but not for a couple of months, at least. This happened when I was playing Diablo III but recurs with only my web browser open.
guestcgAsked:
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CompProbSolvCommented:
You'll find lots of information on this message if you do a search for it online.

Typical causes are problems with device drivers, though that isn't the only cause.  Have you changed anything recently?  In particular, have you installed any updates to Windows or to drivers?

If you have a reasonable idea of when the problem started, run System Restore to put Windows back to where it was before it started.  If you're not sure, just try an old enough date; it is all reversible.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
From the description, I would lean towards video drivers. Going back or forward, whatever is appropriate, would be my next move.

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guestcgAuthor Commented:
I'll try updating the graphics drivers and report back - I use a Radeon R9 280x
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akbCommented:
Download WhoCrashed from http://www.resplendence.com/whocrashed
Run it and see what it tells you. It's pretty good at pin pointing these sort of problems.
guestcgAuthor Commented:
On Sun 04/10/2015 17:12:12 GMT your computer crashed
crash dump file: C:\Windows\Minidump\100415-79232-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x735C0)
Bugcheck code: 0xA (0xFFFFFE80069C95D0, 0x2, 0x0, 0xFFFFF8000397235F)
Error: IRQL_NOT_LESS_OR_EQUAL
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.

^this is what WhoCrashed has come up with - any ideas?
guestcgAuthor Commented:
graphics driver is now updated and I'm testing the PC currently, if there are no further issues tonight then I'll award points tomorrow :)
nobusCommented:
if it is not solved - post the dmp file here for analysis
find it in windows\minidumps
guestcgAuthor Commented:
thanks, this seems to have fixed the problem, for now, at least :)
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