Pc wont boot after installing new gpu (Gigabyte GTX 770 2gb)

[FattysGoneWild]

nitrox said he had a friend running a GTX 780 just fine with the same mobo we both have. My 660 runs fine on my machine. As I explained earlier. Only when I updated the video bios for full UEFI support did it not boot then any more. I was able to restore bios. If what you said is true. Regardless. I don't believe my GTX 660 should be running at all then. I remember Dell having a issue with GTX 700 series running on their pc's. Same problem. No boot. The fix. They released updated mobo bios for everyone. Now they are happy.

[aventine61]

Hello. I have the same computer as Therapod - an H9 Phoenix 1150t with the Pittsburgh motherboard. My understanding is that his computer loaded after a delay, due to a compatibility issue between PCIe 2.0 & 3.0. I am trying to install a new GTX 970 graphics card, only mine doesn't come up after a delay or at all. Just the black screen with blinking underscore on the top left. This is with the newest BIOS (which are from 2012). Any ideas? Thank you

[Evenios]

so what i am understanding is for some odd "magic" reason (maybe to save costs)

the reason there may be no bios update for the h9-1150t is that the motherboard does NOT support 3.0 pci-e express or even 2.0?  the h9-1150s motherboard cleary states it does support 3.0 ...

that is odd. why would two versions of the same main PC have diffrent graphics compatiblity on their motherboards?

odd.

considering that the HP Elite line of PCS were supposed to be  for "mid range gamers" ya think the motherboard would have had that feature....

Oh well......glad to know i dont have the t then. 

so seems then the main issue that why new graphics cards wont boot with HP computers is that the bios are either outdated and there is no update OR /and the motherboard does not support the newer pci standerds to do so.

Makes more since .... i suppose. 

[aventine61]

It does have PCI-e 2.0 slots, and the graphics card should be backward compatible with it. But it appears not. I do think a BIOS update would help. I also tried a Zotac card and no luck. I'm going to replace the motherboard.

[Evenios]

Good luck with that.......not so skilled myself. thankfully my PC the h9-1150 (no letter) has a bios update. and was able to update while still with windows 7 . so now its updated but just to make double sure without wasting my time swapping in the new card then swapping back again if it doesnt work. updating to windiows 8.1 so that clearly i can make sure i followed the suggested steps . sucks your bios hasnt been updated yet. i notice the new one was updated back in sept of 2014 for mine. so who knows maybe hP may come around with updating some of the other bios's down the road....maybe.