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Installed psu and gpu and now I can't enter bios or start windows.

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  • GPUs
  • Boot
  • Components
Last response: in Components
July 29, 2014 12:45:16 AM

I have Asus m11bb. A10 Apu 8gb of ram. I just bought an amd r7 260x gpu and 750w psu to make sure I could run the gpu. Well now that I installed them my pic doest seem to want to work. I start up the pc as usual and it does the Asus start screen, but since the install it just says, "reboot and select proper boot device or insert boot media in boot device and press key". And for some strange reason I can't access the bios. I go to press f2 or delete and the screen just goes black. Please help

More about : installed psu gpu enter bios start windows

July 29, 2014 12:53:00 AM

Do you have a live CD (Linux/windows) or boot media(USB) from which you can try to boot?
You should be able to access BIOS at least. Please check if all the power connectors are properly fitted and RAM/GPU is seated properly.
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July 29, 2014 1:03:15 AM

Sounds like you might have not connected the SATA power cable to your HDD that has your OS on it. Make sure that the SATA power cable is connected properly and then make sure that the SATA data cable is connected.
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July 29, 2014 1:07:32 AM

No live cd or boot media. Yeah that's what I thought about bios, but it just goes black. Ram good, cords are good as far as I know. GPS is seated good.
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July 29, 2014 1:09:18 AM

Try pulling the new GPU out and starting it with the iGPU. If you did not uninstall the iGPU drivers and install the drivers for your new GPU it could cause some confusion.
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July 29, 2014 1:10:18 AM

So do I have to have different sata cables for the hdd and cd drive? Because right now they are using the same cord
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July 29, 2014 1:11:34 AM

Tried pulling out new guy and still the same thing. Can't access bios
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July 29, 2014 1:20:13 AM

Shane451 said:
So do I have to have different sata cables for the hdd and cd drive? Because right now they are using the same cord


No mine are run in series on the SATA power cables and they run fine
Did you plug in the 4 pin motherboard plug
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July 29, 2014 1:27:03 AM

I just don't know why I can't access bios. One of the reasons why I got this Gpu is so I can crossfire it with the Apu. I have plugged in the 4pin.
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July 29, 2014 1:34:15 AM

Shane451 said:
I just don't know why I can't access bios. One of the reasons why I got this Gpu is so I can crossfire it with the Apu. I have plugged in the 4pin.


The GPU will not run in dual graphics with your APU. You need a GPU that has the same specifications as the iGPU (HD8670D) to run them in tandem.

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July 29, 2014 1:58:19 AM

Well I'll figure that out later. I just want to get the computer working again.
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July 29, 2014 2:05:00 AM

Well it sounds like to me that the PC worked before you installed new GPU and PSU. After install issues started?
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July 29, 2014 2:24:35 AM

Yes sir! That's exactly what happened.
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July 29, 2014 3:05:40 AM

Try unplugging all of the cables from your new psu. Then plug them all back in ensuring that they are properly seated, and be sure to plug the 24pin in last and the 4 pin right before that.
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July 29, 2014 4:07:43 AM

Unplugged all cables from cpu, psu, and gpu. Plugged them back in like you said and still same issue.
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July 29, 2014 4:15:36 AM

Do you have another computer that you can hook your HDD up as a slave and see if you can access it?
At this point the only problems that I can imagine is 1. a problem with your HDD 2. a problem with your SATA controller on your Mobo 3. a problem with your SATA cables power delivery from your PSU 4. Static or electric discharge to your mobo when your were in there touching stuff.
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July 29, 2014 4:21:51 AM

I am not an expert by any stretch of the imagination. All I can tell you is what I would do and that is systematically troubleshooting each component until I found the problem. The fact that the problem just manifested itself after the upgrade points to the possibility that something was changed during that process and that would be the easiest place to start troubleshooting. Backtracking is a PITA but Iv'e messed with PCs for hours until I was ready to kick them across the room only to check the RAM for th efourth time and discover that it wasn't seated properly after all.
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July 29, 2014 7:50:17 AM

Yeah I'm not entirely sure, but I think you might be right about the static charge of some sort. But how do I know if it has to do with the mother board or hdd? I put the old psu back in and it did the same thing. So I guess I <<edited for inappropriate language>> something up :( 
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Best solution

July 29, 2014 8:02:56 AM

Shane451 said:
Yeah I'm not entirely sure, but I think you might be right about the static charge of some sort. But how do I know if it has to do with the mother board or hdd? I put the old psu back in and it did the same thing. So I guess I <<edited for inappropriate language>> something up :( 


I am 99% sure its the mobo. Somehow it stopped working. Maybe a wrong connection and some capacitors are out.

If the HDD was the culprit, you should be able to access BIOS. If its the PSU, your old one should have worked. If it was the RAM, you wouldn't get the ASUS flash screen. So I would say its the Mobo.

Btw what make and model of that PSU? You may have to go to a computer repair shop if you do not have access to another motherboard/system to test the components.
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July 29, 2014 9:06:11 AM

Corsair cx750m. I don't have anything else.
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July 29, 2014 10:15:14 AM

That's a decent power supply. I am sorry, but your best bet is to take your system to a computer repair shop. They will be able to identify the defective component and if there is any short/wrong connection or power supply malfunction.

Wish you all the best. I hope your PC will be up and running soon.
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July 29, 2014 12:08:17 PM

Well I'll just have to take it in. Thanks for suggestions.
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