Pre-boot scan cannot remove virus

[ddoctor]

Computer is running fine. Avast regular scan is clean and other scans are also clean, but I ran pre-boot scan and a virus was detected. I could not move to chest or delete due to an error message: "compressed file is too big to process". The virus looks something like this : App Data\Roaming\AVG\Rescue\PC tuneup\ Java: Agent.AIY [EXPL]
All of those old antivirus programs I deleted a long time ago, so not sure where this is coming from.

I am using Avast Internet security 7, Dell 5030 laptop, windows 7 sp1

Thanks

[true indian]

Thats AVG folder....did u run the AVG uninstaller tool before installing avast??

Now u need to take out a that folder....

Open Cmd from start menu and copy paste this in cmd:

rmdir /s /q c:\[User name]\AppData\Roaming\AVG

Note: enter your user name in place of the [user name]

Hit enter and the directory will be deleted...U may have to disable avast before running the command

[Pondus]

run AVG uninstaller tool.....and reboot
also run for any other AV you have had on that computer

http://singularlabs.com/uninstallers/security-software/

[ddoctor]

Didn't seem to work. I entered the command after suspending Avast. Response was:
"The system cannot find the path specified" I did a cut and paste of your command line and like you said, I entered the correct user name.
I also ran the AVG 64 bit program to remove the AVG components and it looked like it did do something but when I ran the pre-boot scan again the same virus came up.

[AdrianH]

Go to C (or whatever your drive letter is) > Users > App Data\Roaming\AVG and delete the AVG folder, the part in brackets should be contained in the folder.  (\Rescue\PC tuneup\ Java: Agent.AIY [EXPL])

[ddoctor]

All set. Thanks guys! My problem was I could not locate the folder because it was hidden! I had to go to control panel to check the box "show hidden files" and then it was there!