Random POST error

[thc]

Hi

First specs
P5W DH DLX, E6600, 2x512 A-Data DDR2 800 (Not Viesta), X1900XT

Been using this PC for 2 months now, everything OK, slight OC for everyday use (3.2GHz, VCore auto, Vdimm 2.1 DDR 710 4-4-4-4, everything else default, orthos stable, memtest stable)

Ok, yesterday I dl new BIOS, set OC settings again everything OK.
Today I just started that damned thing and got long-short-short-short (which probably means memory test error over 64KB). CMOS reset didn't helped. Removed one dimm swaped them randomly and voala PC get throught POST. Ok, been working for a while then turn it of. When I turned it on hour later same thing, so I was swapping dimms and I found myself booted with both of them, having CD of memtest in drive I run it. No problems for hour or so. Turned that #(&%*(& off and on again. No POST. :starting to get insane: swapping dimms. Now Im in windows running Orthos large blocks (so far 20mins no problem) and I'm afraid to turn it off. I also noticed it's more inclined to boot when it's lying on side. ( I know this is getting crazy )

Any idea what's wrong ? I thought my BIG fan somehow managed to physically damage mobo (it's heavy and when it's standing it may bend it little, however I have not been moving it lately)

Any idea appreciated :confused:

Forget to say I have reloaded previous bios.

 

[Impotence]

Welcome to hardware forums thc [:P] :beer:

I Cant think of anything... for now you should trying running without OC'd hardware to see if it makes a difference tho.

All i can suggest to identify the source is to ask a mate with similar hardware if you can chop and change bits temporarly (aka his ram in your comp, check if it boots ok a few times etc)

 

[thc]

currently running without OC (however those errors were also without OC as I reset CMOS), turned it on today morning and booted in first try... seems to me the dimms got used to higher voltage and they just refuse to work on normal specs anymore. ( I know strange, is this even possible??? ).
Yep going to try swaping hw with friend or in job.