No post if GTX 295 is in PCIE 16x slot

[omber]

EDIT: The motherboard was faulty. The store replaced it with a brand new one and we run memtest on it with my card/ram/cpu in their service shop for 10 minutes without issues. Thanks for the help!



Hiya,

Got new motherboard/cpu/ram combo yesterday.

i5 750, 4GB Patriot Viper II, Gigabyte GA-P55-UD3R.

System will NOT post (or no display at any rate) if my GTX 295 is in the PCI-E 16x slot. It starts without issues if I put the card in the 4x slot instead. Does anyone have any suggestions?

EDIT: Actually it appears the system POSTs but there is no display. I can see the system reboot when I press ctrl-alt-del (keyboard light goes on and off, I have the sidewinder keyboard). What the hell ?

EDIT 2: After letting it run in the 16x slot for a bit then moving back to 4x slot and booting up I see this message:

The system has experienced boot failures because of overclocking or changes of voltages.

 

[Atheus]

Is everything powered correctly? Like the aux power connector is plugged into the vid card? Do you get any beeps at POST?

I'd try another card in that slot. If it doesn't work I'd get a new motherboard.

 

[omber]

I tried diferent card and plugged in the speaker.

With the GTX 295 it does not start. No beeps.
With the GTX 295 in the 4x slot, it starts fine..
With 7600 GS in either slot, it starts fine..

 

[mpilchfamily]

What PSU do you have?

It works in the 4X slot because your forcing the card to fuction at very low settings meaning its not pulling nearly the amount of power it needs. Of course the 7600 is within the ability of your PSU to run. I'm pretty sure you just need a decent PSU.

 

[omber]

Antec TruPower Quattro 850

Power should not be an issue. This video card and PSU has been used with Q9650 with 4gb of ram, 2 HDDs, 1 DVR-RW and 3 USB devices for 8 months.

Moving to Core i5 should not have added that much power requirement.