I'm using a h9-1185 Windows 7 and I thought I'd update my graphic card from a 7870 to GTX 760 but that was easier said than done. When I try to boot my computer with the new card it stays at the hp splash screen. The GPU is correctly installed I have both cables connected to the PSU. The fans are running properly It's just that I get stuck on the loading screen when I use the gtx 760. I can't press any keys to go to the boot menu, etc. After sitting at the screen for 5 minutes it changes to a black sreen showing at the corner the brand of my Graphic Card (760 PNY etc....) but nothing happens.
When I changed it back to the old graphic card Sapphire 7870, it didn't freeze or anything. It worked fine. I was trying to update my BIOS but I think i have the latest update (v7.09).
Maybe my english isn't good at all, sorry about that.