Fell for call from Microsoft scam. What now?

An elderly neighbor of mine with a 9 year old Win XP computer fell for a scam today - got a phone call from someone claiming to be from Microsoft who said he detected problems with her computer, etc. He managed to get remote access to her computer and apparently this went on for a few hours until another neighbor came along and saw what was going on... when she took the phone and challenged the caller ther got angry and locked the computer.

My neighbor said she didn't have anything that she needed saved on the computer so I used the Windows Install disc to reinstall WindowsXP. I'm wondering if this is sufficient to restore the computer to a safe state for her to start using again - or could there still be some malware left on the computer by the bad guys?

 

http://answers.microsoft.com/en-us/...ortis-my/58b5ab30-8c47-43ca-85a1-5182d5678819

read above thread

and yes wipe entire drive and reinstall will wipe out everything

unless it is a rootkit then you will have to run something like TDSS killer

also have all passwords changed, contact banks and anywhere else you can think of that would have been on pc, tell them you were hacked and change your account.