PCI Express slot dead?

June 25, 2009 at 10:00:11
Specs: Windows Vista, X24000/ 1DDR800
Yesterday my PC booted but there was no video on either monitor. So after trying the onboard graphics (which worked) I deduced a dead GPU. Shop kindly swapped it for me and all was fine. Turned on my PC today and same problem again. Could this be the PCI-Express slot itself?
The card (an XFX 9800GT) is not even showing in device manager even though it is brand new and worked yesterday.
I have had a few borked SP2 installs lately, always fails to install even though I have had no probs with the PC or card before. Mobo is an Asrock AliveNF7G HDready and is a few years old running an AMD X26000 and 4gb Ram. Vista 32bit.

Could this be a hardware failure or something to do with the failed attempts to install SP2. I am presuming the card is OK and my PSU is an Antec 500W beastie.

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June 25, 2009 at 10:51:46
"my PSU is an Antec 500W beastie"

Beastie? Does it have a single +12v rail or multiple +12v rails? If multiple, do you have the load properly balanced?

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June 25, 2009 at 11:02:08
It is a modular design and I only have the connections I need including a 6 pin PCI-E connector to the card. It seems to have 3 12v rails rated at 19A, 17A and 3A as well as 3v and 5v rails. I researched well when I got the card and it has been fine for the last 10 months (and the card). Not sure about balancing the load. I have only a wireless card inside. Real simple set up.

Could the PCI-E slot be dead but not the mobo? Must point out that the card worked last night for several hours and was only on reboot this evening that I got no signal.

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June 26, 2009 at 02:12:46
Ok, I took the GPU out and reseated and it worked...until a reboot then nothing. So I did a full reinstall of Vista and still no go. Considering the card is decent quality and brand new, while the Mobo was a £30 quick replacment, I am erring on replacing the mobo.

I have a new and unused Asus M2N-MX which is similar spec (it was a replacement from an earlier fried mobo which the Asrock replaced).
Anyone got any better ideas before I strip and rebuild? I am thinking it is the last resort anyway.
Cheers in advance.

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