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BSOD with various error codes
Hi,
Looking for some help/info/support as almost a last resort before I start replacing hardware, and with a Win8 upgrade on the way.
The PC is now approaching 4 years old. It had intermittent crashes from long ago, back then never whilst gaming, mostly during desktop activity, idle, watching streaming video, streaming music. This was usually characterised by scrambled screen and sound when it locked up.
Recently things have got worse, in that BSODs and crashes without "proper" BSODs displaying are much much more common. Also they happen at any time, whilst idle, web browsing, and now gaming.
I can still sometimes play for hours with no issues, leave Boinc running for hours, and then it will crash browsing the web sometime after all that. A couple of days go by with no issues, and then craziness.
I have in the past run memtest and found no errors though I realise this is not conclusive. Temps all seem to be ok, even with demanding gaming, full on Boinc and furmark, prime95.
I reinstalled Win7 a couple of years ago, and that did make a big difference for a while, although the issues have obviously not gone away. When it got a lot worse recently, I switched the memory sticks to the other slots on the mobo. No help.
Extra fun: Sometimes now the System will also neither post nor boot, power on, fans running, but no display and no progress even to post.
A couple of times it has claimed that the BIOS is knackered (bad BIOS checksum) but then after power off and restart it boots fine into Windows. I have replaced the CMOS battery this week, no help.
A friend of mine suspects deeply the radeon HD4890 due to his own experiences with his own and 2 work machines which exhibited similar (i.e. ALL sorts of serious errors) until their ATI/AMD graphics cards were replaced.
Anyway, I would much appreciate any insight anyone can provide at this stage.
I'll do my best to provide any more info needed.