I switched usb keyboard to another one and got arrow keys working. Then i changed and inactivated "floppy disk support"
in bios and windows booted as usual. I ran Avira Rescue CD
and scanned and found Html/Infected.WebPage.Gen
in Program Files/Telia sakerhetstjanster/.... which is the antivirus software used when computer worked.
After that i tried access Safe mode by f8 but came up with BSOD when listed sys files..
Code: 0x0000007B (0xF7C7B524, 0xC0000034, 0x00000000, 0x00000000)