8800 gt 512mb (zotac) slows down after bios.

[Ezy Ryder]

When I turn on my computer I see cooler running full speed but after bios it slows down. Sometime when I turn on computer my monitors says "Check for cable"(something like that) and when that is on monitor graphics is working full speed. But then I can't get image on monitor no matter what I try (changing outputs on GPU and I check more than once that all cables are tight). After restart GPU slows down again and system works normaly. I thought maybe it is PSU but it is 400+ W (can't remember correct).
Asus P8H61-M LX2 R2.0
Intel Pentium G620
4 gb DDR3
Zotac 8800GT 512 mb

 

[i7Baby]

When I turn on my computer I see cooler running full speed but after bios it slows down. - normal

Sometime when I turn on computer my monitors says "Check for cable"(something like that) - find out what is says EXACTLY

But then I can't get image on monitor no matter what I try - try another GPU.

 

[Ezy Ryder]

When I turn on my computer I see cooler running full speed but after bios it slows down. - normal

Sometime when I turn on computer my monitors says "Check for cable"(something like that) - find out what is says EXACTLY

But then I can't get image on monitor no matter what I try - try another GPU.

Monitor worked ok on integrated graphics and I used this monitor on my previous setup also (Athlon II x2 240, 3 gb DDR2, 8400gs) and it was also ok.
And about that message... It didn't happened again and I'm to lazy to remove cable from GPU.
Btw monitor is FLATRON W1934S and because my monitor only has VGA output and GPU only has DVI I use adapter (plugged on GPU).

 

[i7Baby]

Looks like we're both too lazy. Good luck.