Freeze, no keyboard input after POST beep

martwu

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Ok so I have a new build with the following hardware:

AMD FX-8350 8-core CPU
Cooler Master Hyper 212 EVO CPU cooler
GIGABYTE GA-990FXA-UD3 mobo
EVGA Nvidia GTX 660ti
16BG (2x 8GB) Corsair Vengeance 1600 DDR3 RAM
EVGA SuperNOVA 750G1 750W ATX12V PSU
2 Blank HDDs (Maxtor and a Seagate, both 500GB, 7200RPM)
MS Sidewinder X4 keyboard
Generic laser mouse

Here's what happens: I power on, I hear the POST beep, I can see the Gigabyte UEFI screen with options like "DEL for Setup, F9 for system options, F12 for booth menu" etc. And then NOTHING. I can't use the keyboard; nothing I hit produces any effect, except I can reboot with CTRL-ALT-DEL, with the same results: a never-ending cycle of suck. The keyboard is back-lit, so I know it's getting power, and I have tried it in several different USB slots. Sometimes on the reboot, if I hit a key quick enough I can get into the boot menu, or the BIOS (UEFI) will start to load, but nothing else happens. In the latter case, I can see a mouse cursor, but again, it's frozen.

This happened previously, and I RMA'd both the CPU and mobo, and the exact same results occurred. I even contacted Gigabyte...I have yet to hear back from them.

All of the fans are running, everything connected to the mobo seems to be working well enough (like I said, the keyboard is lit, and I can still reboot with CTRL-ALT-DEL). I can also see the UEFI screen, so I don't think it's the GPU, and it also seems to work in my other system. I just can't get past that POST beep. I have verified both the RAM and the GPU in another computer; both work fine. I am also using the exact same MS keyboard to type this, so I know that works.

Head-scratcher here. I'm at a complete loss.
 

martwu

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Yes exactly that. I have tried flashing the battery, but not replacing...not even sure what kind it is. And it's a normal POST beep according to gigabyte.
 

Darthutos

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the battery is the round silver flat thing near the CPU socket and/or the GPU PCIe slot.

I'm thinking it's out of juice.
It will have something on it that says type ___, record that and go to a drug store and /or watch store, they should have valid replacement.
 

martwu

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Nope. Replaced it, same thing (CR2032, btw). I also, just for fun, re-seated every connection to the mobo. Same thing.
 

Darthutos

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So the battery idea was a bust.
Have you tried different USB ports for the keyboard? Try one of the USB 2.0 ports on the IO panel, not the front of case.
If you have no more USB 2.0 port (I'm looking at you Z87 UD4H Giggabyte!), try one of the PS/2 port? If your computer have no PS/2 Port nor USB 2.0 port, Try another keyboard? If still no cigar, Return the Mobo if possible and buy another model?
 

martwu

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Like I said this board is a replacement, with the exact same problem as before. The CPU was replaced as well on the off chance. And yes, I've tried different ports, but not the front of the case (those aren't even hooked up) I don't have a PS/2 keyboard (haven't for years). In any case, I really don't think it's the board; it's gotta be one of the components, but I don't know what else to try. Would the PSU do something like this?
 

Darthutos

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It's a modern PSU...

When I was building the PC with the ud4h, I had a OCZ 600W old PSU. When I put it in, it booted up right away, so I tried hard reset, and it didn't boot no more...
I had to wait 20 minutes, and then it booted up again no problem. Shut off PC. Restart, PC no more booting...

Had to get a Corsair HX 650W from my HTPC, and now it doesn't have any problems. Except can't install Windows 8, the Keyboard won't work when it gets time to enter credentials for the first time. Now running windows 7 without a hitch.

Gigabyte, and especially the z87 ud4h sucks.

Go ahead and change the PSU, but I wouldn't bet money on it. But who knows, it is a Gigabyte board.
 

martwu

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It was the GPU. Took it to a tech and the card produced the same problem in two different test boards. Weird thing; it worked fine in my old Z87 motherboard. A little testing revealed that something about how the card was drawing power was interfering with the post.

Well, whatever; popped an EVGA GTX 770ti card in and it works perfectly. Problem solved.