Hello everyone!
I've had this problem ever since I installed a new GTX 970 onto my PC last year.
Basically, my PC won't boot unless I press f5 or f6 or f7 or f8 in the first few seconds during the splash logo. I have an HP desktop of which I upgraded it's graphics card and I think the problem comes from the motherboard not "liking" the new graphics card and the "f keys" working as an ignore button. When I press one of the mentioned keys while booting, the PC boots and works flawlessly and that's how I've been using my PC ever since I upgraded. Now that my PC is getting a little "old" for me, I'm looking to sell it, but I have to fix this problem or else no one's going to buy my PC.
I'll give you guys some info on the Motherboard and GPU in the imgur link:
What I think is causing the problem is the fact the motherboard is discontinued and the graphics card is newer than the motherboard, causing a conflict where the motherboard doesn't understand what the new hardware is. I think this is going on because when I install my old graphics card (it was an nVidia 545), it boots without problem.
Here's what happens when I don't press the button:
HP splash screen appears.
PC beeps 1 time, about 10 secs later it beeps again 1 time, and 20 secs later beeps again. After the last beep, it goes into a screen similar to that of picture 3, basically a black screen with a blinking underscore and it stays like that forever.
Here's what happens when I press the button:
HP splash screen appears.
I press one of the f keys (5 or 6 or 7 or 8)
Screen changes to a black screen with information about the cpu and ram and their respective frequencies.
PC beeps 1 time, about 10 secs later it beeps again 1 time, and 20 secs later beeps again. After the last beep, it goes to a black screen with a blinking underscore for one second and boots windows normally.
Basically, I have to wait about 30 seconds in the BIOS in order for the PC to boot everytime, and I have to press one of the previously mentioned f keys in order for it to boot after the last beep.
Thank you for reading, any help would be very much apreciated!