Black screen with cursor on boot. Problem with avast and aswrvrt.sys

Viruses and worms
1

Hi,

Since recently I haven’t been able to start my computer, neither in normal mode nor any safe mode. It always ends the same way; when booting it loads all drivers and hangs at aswrvrt.sys (avast) for a minute then opens an unresponsive black screen with a cursor. From Google I’ve learned that I’m not the only one who’ve faced this problem. I’ve also learned that I should use Farbar Recovery Scan Tool to get a logfile, which I’ve done. Now I would be very happy if someone could help me to fix my problem using the logfile attached (FRST.txt).

I’m really thankful for any help!

2

Download the attached fixlist.txt to the same location as FRST
Run FRST and press fix.

On completion try a normal boot

3

Thanks, but it didn’t quite work. Still booting to black screen with cursor, both in normal mode and safe mode, hanging on aswRvrt.sys. Attached is Fixlog.txt

4

Can you recall what happened prior to the boot failure ?

Download the attached fixlist.txt to the same location as FRST
Run FRST and press fix.

On completion try a normal boot

5

Same problem again. Boot to black screen with cursor, both on normal mode and safe mode, hangs on aswRvrt.sys. Attached is Fixlist.log.

Well, I can’t recall exactly, but a few things that happened: avast started not working properly, I couldn’t activate it, so it was deactivated a few times when I used the computer before this problem occured. And often when the computer went to sleep and I wanted to start the computer again it had shut down and said that the computer hadn’t shut down properly. Sometimes when I started it I got a blue screen saying something that I don’t recall exactly, but that if this was the first time I got it I should just restart the computer. Most times that worked.

Really appretiate your help essexboy. Will any of this affect my saved files?

6

OK next task before I disable Avast is to run a chkdsk

From the recovery console select command prompt and type the following :

chkdsk c: /r

Once completed try a reboot

7

Successful check without finding any problems. Still the same problem on boot, both in normal mode and safe mode, hanging on aswRvrt.sys.

8

OK this one will disable Avast

Download the attached fixlist.txt to the same location as FRST
Run FRST and press fix.

On completion try a normal boot

9

Same problem, both in normal mode and safe mode, but this time hanging on CLASSPNP.sys instead ??? Fixlog attached

10

Could you try a startup repair from the recovery console, that is our last option I am afraid