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yes also recognized that for the mentioned PSUs.

Maybe better getting another identical higher classed PSU- Type LC6560 GP3.
Then in an urgency i can replace a defective one on new pc.

Will get a LC-500-H for P4 and as backup for Dualcore-PC LC6560 GP3.

I bought the cheapest one here. next for old pc will be at a similar price-level like the actual one.
ok one must know PSU had to work a lot over all those years since i had to replace the last one....

Found a most probably better PSU which i had got from UK(LC6460GP3) for my older P4(one floor higher on my PC-desk), the one from local dealer seems much cheaper. SL-500A(defective one).
has less...

Rest Firefox but afterwards i had a screen-blackout again.
Will now first replace PSU and then observe if its repeating. Video-card could be a reason.
have now reset hdmi-cable from switch to...

Maybe 12v-line in touch with main-power-cables-line of MOBO maybe too much windows open in FF. and PC on power for too long time.

old PC and FF are terribly stable.

Found out what to do to shut-down PC when desktop is black:
1. Multiple times enter Alt + F4
2. enter Alt + A(=shut down)
if not working increase the multiples. normally four times will do.

A Virus must also be taken in consideration.... we will see soon.
System was clean until recently.

since yesterday it happend twice that screen went black when i was surfing. screen showest error-message no signal. so screen and videocard seem ok.
One must know the background how my pc-setup is:...