GPU Upgrade, Stuck at BIOS, can't enter. Suddenly old card returns bad POST beeps? No integrated graphics!

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nuclearbathory

Prominent
Feb 2, 2018
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I see this question has been posted a lot, but I've gone through a ton of them, and unfortunately my situation seems more difficult.

I'm swapping an old nvidia 760 for a new nvidia 1080. After install, the machine hung at the bios screen after the one beep post. After looking into the problem, I figured the card was underpowered, as it requires both of it's power connector slots to be filled. So I needed to order extra cables and wait.

New power cables came, installed, but still hung at BIOS. I see many people just had old BIOS and an update fixed it. So I installed the old card. But now, the old card will not pass the POST, and returns the gigabyte pattern for "bad GPU" one long, three short beeps.

This card was working perfectly before, but now I can't get past POST.

I saw everyone recommending a CMOS reset at this point, so I reset the CMOS. No change, still can't pass post. Put the new card back in, and it still hangs at BIOS.

I have the BIOS update ready on a bootable flash drive, but I can't run it without getting into BIOS. The machine has no integrated graphics at all. Am I stuck? I'm at a loss of what to do next.
 
Solution
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Alright, it's fixed.

It wasn't the PSU. To the person who said my old one wasn't good enough, it was, it was just modular and I no longer had the extra modular cables. I had moved a couple times, and just must have lost them.

So ultimately, I guess I didn't give the CMOS long enough to reset. 30 minutes was not enough. But I left the battery out for a couple of hours, came back and tried the old card and it worked.

I was then able to update my BIOS, install the new card, and update the drivers. I'm up and running. Thanks everyone.

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D

Dave Thompson

Distinguished
Jun 11, 2014
152
1
18,695
Did you manage to fix the problem? I wanted to help, but I didn't really have any ideas. I know I was having problems with a new card, and I did need to get a new PSU. Someone said that if the PSU doesn't have the right connectors on it for a modern graphics card, there is a good chance it is not fit for the job. That was correct in my case, as I was using an Alpine that was supposed to be 700w, when in reality it was only giving me about 450. When you said your old card would no longer boot (when it did before) I was baffled. Hope bumping this might get it noticed. Good luck. I know how frustrating it is.
 
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bystander

Champion
Dec 9, 2009
15,141
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57,965
I'd definitely look at your PSU. The fact that it didn't have the connectors for a single 1080 leads me to believe it just isn't good enough. After you used the new GPU on the old PSU, it might have damaged the old, weak PSU, which may have been good enough for a 760 before, but certainly not good enough for the 1080.
 
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nuclearbathory

Prominent
Feb 2, 2018
2
0
520
Alright, it's fixed.

It wasn't the PSU. To the person who said my old one wasn't good enough, it was, it was just modular and I no longer had the extra modular cables. I had moved a couple times, and just must have lost them.

So ultimately, I guess I didn't give the CMOS long enough to reset. 30 minutes was not enough. But I left the battery out for a couple of hours, came back and tried the old card and it worked.

I was then able to update my BIOS, install the new card, and update the drivers. I'm up and running. Thanks everyone.

 
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Solution
D

Dave Thompson

Distinguished
Jun 11, 2014
152
1
18,695
Good to hear. Gotta say, never felt I needed to reset the cmos, and if I did, I would never have thought the battery would need to be removed for 2 hours. Well, so it does work for some people then, so I've learned something!
 
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