UK user, Dell XPS15 (core i7, 8GB), 500GB NTFS HDD, Windows 7 (64) Home Premium. Avast AV (free).
Problem arose when Windows 7 updated last week - caused Avast (and Dell Quickset) to stop working. System would not allow Avast to be fully uninstalled, possibly some malware involved too. I used Avast removal tool and tried to restart.
After this, System won't boot normally or in safe mode - BSOD with 0x80070057 error. Have tried System restore, last good configuration, chkdsk/r and Startup repair - all fail. Avast support have also tried various things (inc FRST64). I have a USB with Windows 7 on, and can use this to get to command prompt but all repairs/restores fail.
Startup repair diagnostic details: Boot critical file c:\windows\system32\drivers\aswrvrt.sys is corrupt. Repair action: file repair. Result: Failed. Error code 0x2.
BSOD states: Technical information - STOP: 0x0000007B (0xFFFFF880009A97E8, 0XFFFFFFFFC0000034, 0X0000000000000000, 0X0000000000000000)
Does anyone have any suggestions as to other things I can try without losing the data on the drive? The drive has a recovery partition - not sure if this is an issue.
Thanks in advance