Long blinking orange light on Optiplex 380 and does not turn on.

Question

Hi, I'm new ..

I have a Dell Optiplex 380 and it doesn't turn on, just really long orange light on power button.

It's only turn on when holding the back button and it shows number 3 4 with beeping sound + really loud fan noise.

I upgraded the RAM from 2GB into 4GB.. I got those RAM by my friend, he's using optiplex 380 DT too...

Please help me... Is it problem with PSU or RAM or Processor? Cuz I reseat the processor recently

redxps630 · Accepted Answer

to find reset jumper (#10)

redxps630 · Answer

Try replace cmos battery with a new battery and clear cmos settings via motherboard RTCRST jumper.

Nic Mohamed · Answer

So what the problem actually? What is RTCRST jumper and how to do it?

I remembered, someone pranked me cutting off green wire of PSU cables, I accidentally turn on the PC that time and then I tape it back.

Optiplex Desktops