Why does my monitor stay black when I turn on my pc?

January 20, 2016 at 15:08:58
Specs: Windows 8 Pro 32-bit
Hello, I am in the process of upgrading my brother's pc. However, when I turn on the pc the monitor stays black and says no signal. The pc specs are below. Thank you.

Gigabyte GA-990FXA-UD3 AM3+ AMD 990FX
Patriot Viper 8GB DDR3
AMD FX-8320 3.5ghz
Zotak GeForce GTX 560Ti OC
Corsiar RM750 Watts

message edited by robel14

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January 20, 2016 at 15:42:46
Flat Panel Monitor Displays Message about No Signal, Signal out of Range, Sleep, or Power Save
This may or may not apply.
Press the keyboard Suspend button. You may need to press the Suspend button on the keyboard twice (the suspend button has an icon that looks like a quarter moon).

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January 20, 2016 at 16:15:59
Did you bench-test before installing everything in the case? I'm guessing you didn't so now you have no idea where the assembly went wrong. I suggest you tear it apart & start over, or at least strip it down to the bare minimum. Disconnect all the drives, take out all RAM except one stick. Unplug all external devices except the keyboard (use wired rather than wireless) & monitor. Unplug the power cord, double check all the power connections (24-pin main ATX, 8-pin ATX12V, 2 x 6-pin to graphics card, etc) & then reset the BIOS using the Clear CMOS jumper. Plug in the power cord & see if the system will boot & allow you to access the BIOS. If not, remove the board from the case & bench-test it. Are you sure the thermal paste was applied correctly? Tiny dot in the center of the CPU?


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January 21, 2016 at 00:53:10
Yeah, what parts are you upgrading and was it working before you started the project?

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January 21, 2016 at 04:54:15
Hi Robel, start by proving the monitor is ok.

Take it AND its interface cable and try on another pc.
The monitor is probably ok as it displays the message, but this will prove also the cable.

Alternatively, check the interface cable is connected to the correct socket.
e.g. sometimes the mobo has a monitor socket, which does not work when a Graphics Card has been installed.

Good Luck - Keep us posted.

message edited by Mike Newcomb

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May 12, 2016 at 06:53:04
my monitor would work for 5 minutes then I would see message 'no signal' and monitor would go black. I would reboot and monitor would work for 2 minutes. video card was HOT. I used can of compressed air to clean inside but saw no improvements. Then I took the whole system to computer repair shop with very powerful air compressor for blowing. More dust bunnies were blown out. Then monitor worked perfect!
I have the geforce video card and the fan is on the bottom so you may need to remove card (disconnect 2 wires as first step to removal) so you can blow out fan to remove dust bunnies.
With previous laptop I also encountered blacked out screen due to lint and dust in the system.

message edited by LynnTexas

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