I hope you do not mind me coming in on this.
The error scan is of course the chkdsk but in case you are tempted to full scan as well with MBAM please see this
DO NOT run a full scan on MBAM it is never necessary, except when advised by an expert. MBAM is not the usual malware scanner it is a heuristic scanner and the quick scan covers over 99% of files. The only difference between that and the full scan is that the full scan will include the system restore points and if a tiny fragment of something is found and the action to FIX taken, it will make that restore point
Additionally do NOT use the registry cleaner aspect of CCleaner, other than that the program is OK.
I cannot make any real comment on this as I have no knowledge of it, but a quick examination shows that it alters the registry UNLESS you uncheck that part of it. DO NOT allow any program to change the registry., from a cleaning aspect.
Try disabling everything associated with AVG in "msconfig", "start up" for now. If that doesn't help either. Re-enable them. Or you could uninstall AVG for now if you find that easier and re-install it later.
Be careful, if you do this and then open a browser, you COULD be left wide open to an infection
Edited by Macboatmaster, 14 November 2010 - 03:44 PM.