I knew I had posted about this before. Same issue started happening this morning, has been fine for years!
has switched itself off a few times (as in if I pulled out power lead) at various stages from being in OS, to boot.
So I thought I'd try a live cd, as soon as I hit eject button after powering on, switched itself off.
so I pulled out geforce 880gts 512, plugged monitor into onboard, PC started into livecd, started to run memcheck for a bit was ok, rebooted, it went into an OS fine, used for a bit, rebooted again ok.
I switched it off, put 8800 back in, again, it switched off shortly after boot.
so I put 7300gs in, again it switched off shortly after boot, before HD checks, CD checks etc.
PC is again up and running now using the onboard graphics.
So, that looks like PSU could be problem. I've got the old PSU that came with PC, but I think that's only 250watt, but was ok with 7300 a few years ago.
I can probably try 8800gts in Father in law's PC later today.
Any other suggestions?
thanks
Al
---------- Post added at 10:58 ---------- Previous post was at 10:13 ----------
crap, been using if for a while, and it switched itself off, so back to beginning of this post for suggestions about shorts etc
guess I'll try old PSu with 7300
---------- Post added at 12:14 ---------- Previous post was at 10:58 ----------
so far so good with the 250Watt HCI PSU and 7300GS graphics card