Posted 27 June 2011 - 04:58 PM
I have a Windows XP Professional with service pack 3 machine on my network that has been acting sluggish for several days. I was just informed today about the issue. When trying to access Microsoft Office 2003, AutoCAD and other items including Firefox etc. I either receive the message "Application not found" or I need to choose a program to use.
Here is what I have done so far:
Ran Malwarebytes in standard and safe mode, removed TrojanProxy.Agent (delete on reboot). I did not remove PUP.perfectoptimizer since I am not sure what it is.
I ran a defrag
I deleted the files in prefetch (per Geeks To Go Forums)
I have looked around the registry for the files associated with the above mentioned trojan and do not find any.
I found some information about Window's File Association Fix and fixing the EXE Association but being a lay person not very comfortable doing that because the instructions are vague.
I have Vipre as my AntiVirus software, there is a scan done everyday at lunch. I have not run a scan on the machine since I started working with the issue to see if it picks up anything.
If someone would give me some assistance I would greatly appreciate it.