On Off display

sar_1_

Commendable
Oct 3, 2016
3
0
1,510
Hello, I have a some a problem with display, i have a pc win 7 64bit.

Recently, when i press the "power" button, the beep heard after 30 sec, then the screen display, sometimes, i hear the beep but NO display, so ihave to turn off, then on, until the display is OK.

What i do:

replace new psu.

PROBLEM WAS NOT GONE.

What i do AFTER replace psu:

Disconnect all hardware, try to figure it out which cause the problem, but everything is OK.
Unplug the psu, connectors, press POWER button for 1 minute.
Enable QUICK BOOT on bios.
Check delay on bios - NONE.

After recent steps, i didn't check if the problem come again, also sometimes the the mouse cursor hangs for 1 sec...if this related or something...

So...what is this can be?
 
I also check the ram, volatge, freq, in bios...

Disconnect them, and leave 1, like this, change slots...same delay...same on off display...

Wonder...