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PC not recognizing monitor, keyboard and mouse

Last response: in Components
May 3, 2013 4:29:14 PM

I just received a new replacement for an RMAd motherboard but now when I turn on my PC, the monitor immediately goes into power saving mode and switches to an amber/yellow light while the kb&m remain off.

The monitor, kb & mouse work fine on another computer.

Things I tried:

- Resetting the CMOS by removing the battery and putting it back in.
- Unplugging all the wires connected to the PSU, using a can of compressed air to dust off the inside, then reconnecting the wires.
- Using different cables.
- Turning it on w/ only one gpu inside

windows 7 64 bit
asus p8z77-Vdeluxe
16 gb DDR3 ram
intel core i7 3770K
x2 nvidia evga 670 GTX
corsair HX750

May 3, 2013 8:53:32 PM

Thx for the link I went through the check list but w/ no success

What I tried:
- Completely reassembling PC
- Checked for screws or wires under motherboard
- checked CPU position and thermal paste
- Checked for extra golden pins
- checked if wires are plugged in right
- Turned it on with only 1 RAM stick inside

And does this motherboard beep during errors or do I need to buy a motherboard speaker?
Related resources
a b V Motherboard
May 4, 2013 12:39:10 AM

You need to connect to the onboard video out, that is the default primary video.
May 4, 2013 12:48:20 AM

thx but i tried that already, same result.
a b V Motherboard
May 4, 2013 1:09:16 PM

I can barely see in a photo of your MB, but it does appear to have the 4 LED start-up indicators: CPU, RAM, GPU, and primary HD. DO all of these LED's turn on and then each one is supposed to turn off to indicate that each device has been properly recognized?
a b V Motherboard
May 4, 2013 2:16:48 PM

I was going to blame the PSU but after reading a review, perhaps it is not the case -

However, try only one video card and see if the PC boots up.
Considering that there is a problem with power, it might be that the PSU is at fault.

Best solution

May 4, 2013 5:04:56 PM

was finally able to resolve it by updating the bios via usb flashback. monitor, kb and mouse work now. thank all for the help.