So I think I had a back door trojan .Symptoms were that the computer would hang every three secs just for a moment and then continue. No virus evident using MS essentials and Malware Bytes etc.
Identified the issue to files that could not be deleted in the appdata folder...under Chrome...tried Zonealarm to stop Chrome but kept overriding zone alarm..
Tried to delete the relevant folders but no go. tried using a delete on boot..no go....tried to delete the user..not having it...tried to delete in safe mode..no good.
So - Full re-install of windows 7 ...now all great- symptoms gone..BUT
windows.old folder is still there...OK delete it......fine apart from ...you guessed it..the appdata folder local of each user...
So do I format the drive and re-install windows using the Novatech DVD...
or is there another way to get rid of the appdata folders to be sure this trojan is gone. Maybe take the drive out and connect it to another PC?
What do you experts think?
At least my 14 year old son is happy again on Minecraft and I do not have to buy a new gaming PC,,,for the moment..
Thanks for reading and any thoughts..
Mark from Bristol..
Edited by mdstuart, 28 June 2015 - 11:13 AM.