Yesterday i updgraded from 10.04 to 12.04 via the update-manager. At the end it said
"Failed to upgrade due to too many errors".
Before that i got a lot of error messages that said packages could ne configured - they were all related to mono.
Then it force me to restart. When booting now, I see the pink screen (without logo). After that it turns black and the cursor appears. Then its flashing around between being bright and dark and showing the cursor and not showing it. But no way i see the login-screen.
At the moment i am not able to boot from usb since my usb device is too large to be formated to FAT-32 (8GB).
This all is happening on this machine: AMD E-350 Processor (2x1,65Ghz) 4GB DDR3 RAM 320GB SATA II Hard drive AMD® Radeon™ HD 6320
Thanks in advance to everyone who trys helping me ;) I have to continue working with data from this machine so i´d be pleased to get my data accessible.