Question Optiplex 990 powers on for half a second

zSkyer64

Commendable
Mar 24, 2020
9
0
1,510
Hello, I worked on my PC today and had to unplug all cables from the PSU, and when I plugged all of them back again, the system powers on for half a second with the orange light and shuts off immediately. Any help?

Video of the PC problem is here:
View: https://youtu.be/nscj_x2WhIo
 

zSkyer64

Commendable
Mar 24, 2020
9
0
1,510
try the other white RAM slot

unplug the HDD and the DVD drive SATA data cables

is a monitor and a keyboard connected while you are trying to power it on?
  • I swapped the RAM to the other white slot (no success)
  • Unplugged, problem still there
  • No, only the power cable is connected.
 

zSkyer64

Commendable
Mar 24, 2020
9
0
1,510