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Gainward Phantom 770gtx problems, help!

Soldato
Joined
1 Mar 2007
Posts
4,430
Hi,

I just received this card today as an RMA replacement, which I very promptly installed with a smiling happy face...until I noticed that the screen was just totally black. I tried switching DVI sockets on the back of the card first of all but without any luck.

After this I decided to try plugging my girlfriends monitor into it instead and that came on fine! and it was already in windows and everything. I then plugged my own monitor into it, which also then came on absolutely fine. I had a quick mess on various games at 120hz, and performance was great with temperatures looking very good also.

So I then rebooted the PC, and the screen just went totally black again straight after it started rebooting :mad: It seems that if I keep fiddling with plugging in different monitors then eventually it'll come on (at the win8 login screen) but after every reboot it is back to the black screen again.

From reading the internet I gather there is some sort of big problem with 770gtx's where they can do this sort of thing and the solution was to enable "legacy" while using an old graphics card to even get into bios in the first place, which i did, and for the first few seconds i thought it had worked as I could see bios for the first time on the card, but then 3 seconds later as the normal windows boot would normally begin, it went back to the black screen again :mad:

I'd really appreciate any ideas that may fix it! ;) Its so frustrating!!! Is there anything obvious that I am totally overlooking ?
 
Ok, so now it appears to be pretty much behaving itself! I think by setting "legacy" in bios, it actually fixed the issue!

anyone know if there is a known issue with this by the way ? or anything along these lines?

I guess I'll have to see how it goes in the next few days.. !
 
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This kept happeing to me 2 , i just did a fresh reboot installed all the right drivers for my motherboard, then windows and then finally did the grachic card and it seems to work :)
 
Think googalymoogaly had a similar issue last night where some cards would work, and others wouldn't (even the same models!). First we -via steam chat- tried setting the PCI-E to V2 down from V3, and that did work. Another way was to set it to legacy. The third and permanent fix was to update the bios. In the case of this motherboard it specifically had PCI-E compatibility fixes in the updated bios.
 
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