Desktop-PC Acer Aspire E300 - fan at full speed, monitor black
Hello,
It is an older Acer Aspire E300-M97S desktop PC
with a mainboard Foxconn CK804M03-6EKS.
When I turn it on the fan runs at full speed.
The monitor remains black.
I tried a different power supply - no success.
I tried a different graphics card - no success.
I changed the 3 volt battery.
Could it be because the BIOS settings have been lost?
The following happened before:
The graphics card has 2 DVI ports.
Once when I plugged the DVI connector into the other DVI port,
a picture appeared and I was able to enter the BIOS with "Enter".
The fan ran at normal speed.
But that only worked once or twice.
Now when I turn it on, the fan immediately runs at full speed and the monitor stays black.
What could be the problem, what can I do?