No No No, NO NEED to reformat, at least not yet. This could be a trojan acting up on the system as well. Grab "The Cleaner"
http://www.moosoft.com/
I have used this program for around 7 years it's probably the best for trojans. Also you need more spyware programs, I am a PC tech I do this for a living cleaning peoples PCs out. You need like 4-5 spyware programs and then some, depending on how crazy things get out of hand.
Some of these apps are not freeware, BUT use them anyways they are good and either toss them out when done, or buy them, so grab these other programs to scan the system:
Spy Sweeper:
http://www.webroot.com/
Xcleaner_free:
http://www.xblock.com/download-freeware.php
Bazooka:
http://www.kephyr.com/spywarescanner/supportus.phtml
Then at this link are a HEAPS more spyware apps:
http://www.spychecker.com/software/antispy.html
But whatever you do and however many more you get run use Bazooka and run it "LAST", it's great little tool and anything left around it will pick up. BUT you have to remove the entries it finds by hand. SO then I recommend starting your scans over with some other spyware app until Bazooka doesn't say anything, OR you then click the name it shows in Bazooka and it will load the website online with information on how to deal with it.
Spyware = PATIENCE, I have spent many a hours ripping them out.
And when all the scanning is done and IF, I STRESS the word IF, you are fairly PC savvy, then grab JV 16 Power tools:
http://www.macecraft.com/downloads/
Grab ---> jv16 PowerTools 1.4
JV 16 Power Tools is to clean the registry of stray entries. A clean registry improves system performance, but make a mistake and you might not be running. But not to worry, with spyware this will be easy. Once the program is open you click, or put your mouse on the name "Registry tools" on the menu on the left, then 4 boxes appear on the right side, the 3rd one from the left, if you put the mouse over the boxes will give a description. The 3rd one is called the "Registry finder" CLICK that box and you will get a small white window, "Enter the search words" REMEMBER the names of the spyware and type them in this box. Then click "Continue" at the bottom when you have all the names you want, then in the next section at the top. "Select which root keys to scan" make sure they are ALL checked. Then under the "Search Options", I leave all the options as they are and also check, "Use as little processor power as possible" Then click START and when done you can remove anything you have found, BUT take your time and look through the results to see if you NOTICE these spyware names in there somewhere, try to becareful not to rip anything out, BUT to make sure you see then names in there.
When you are satisfied, you can then remove them, but if something ever goes wrong, then go to the Program Files directory and look for the jv16 PowerTools folder and inside you will see a "Backups" folder. From in there is the regedit files, you can just CLICK on them and they will put those entries back into the registry, in case you make any mistakes.
GL!
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