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#21
Good news!
I think I don't need to go all the way through to the BIOS battery.
I removed the hard drive and started the notebook. I easily got into the BIOS. I set an USB stick as first boot option and I could boot from that live Ubuntu USB stick.
So thank you all very much for your help so far!
The problem remains though:
I shut the PC down and put the hard drive back in. When I then started the computer, I had just the same problem as before: black screen with logo on it and I can't access the BIOS any longer. I have not removed the USB stick I had used before.
Maybe I need to format the hard drive? How would I do this? Can I put it back in while the PC is running (as ubuntu live system)?
Anyway, you are the specialists: please, tell me how to go on.:)
Last edited by JoeHannes; 11 Jan 2016 at 18:54. Reason: word missing