No Display Detected - Multiple Displays/Cards tried

[normpearii]

Currently trying to solve a no display detected issue on my father's computer.

Specs:
ASUS M5A78L-M LX Motherboard

AMD FX 8120 @ Stock with Stock Cooler (System is in a high airflow server chassis, all temps are pretty good.) (Purchased in the first month they went on sale.)

Originally had a ASUS R7 240 in it. (He doesn't do any gaming and wanted something newer than the integrated graphics.

Lots of hard drives, an SSD and 1 RAID card.


We've tried different displays. (A pair of TVs via HDMI and VGA, and an old 90s CRT monitor.)
We've tried using my old HIS AMD Radeon HD 7750, also no display.

We've tried DDUing the graphics drivers and reinstalling... No dice.




My father is planning to replace his system after Intel's and AMDs next processors get released. So I need to find get this to work for a few more months, and I'm out of ideas at this point.

[Oswin]

are yu sure the gpu is not loose ? i had the same problem turns out it was just loose 

[normpearii]

Just now, Oswin said:

are yu sure the gpu is not loose ? i had the same problem turns out it was just loose 

I've tried two different cards, and before I tried the 2nd card, I took the 240 out and reset it as I've loose cards in the past as well.

[Godlygamer23]

Was the system working previously?

[normpearii]

3 minutes ago, Godlygamer23 said:

Was the system working previously?

Yes, for years. All I've done in the past is the clean the system every couple months. 

Last hardware change was installing the 240 and SSD in 2014.

 

 

3 minutes ago, wrathoftheturkey said:

How?

Try resetting CMOS and rechecking power connections.

Used DDU to uninstall the drivers and any older versions, and downloaded fresh drivers.

Will try CMOS in a second here. Got to drag out a VGA display first since it defaults to the integrated.

[normpearii]

38 minutes ago, wrathoftheturkey said:

But you said there's no display output...

Teamviewer can still output the Windows GUI with no display as long as there is some graphics card or integrated graphics available. 

So can Google Remote Desktop.


CMOS worked. No idea why it worked, considering nothing has changed in 2 years... but it worked.