Here's the situation: Yesterday, I had my Chrome browser open to my internet emailbox on one tab, a Google search on a second tab. Search results seemed less than trustworthy so I didn't click on anything, and eventually went back to review my emails. About a minute later, my screen goes white and just says "hi!" in the top left corner. Java starts having errors and extra windows with random crap and ads start opening.
Knowing I had a problem, I tried to scan using Microsoft Security Essentials. It says it didn't find anything. So I updated and ran MBAM, hoping it could find the culprit. This was at the end of the day, and when I returned the next morning, MBAM had frozen after about 3.5 hrs and finding 12 errors. I restarted the computer and tried it again, but this time I tried turning off more background stuff, thinking that a scheduled scan kicked in and caused the problem the night before. This time, after 4.25 hrs, it gave me the BSOD. After I shut it down again, it rebooted with a second BSOD. Finally booted in Safe Mode, then restarted to normal. This time MSE picked up on a Trojan: Redirector.bb and "Removed" it. While I was at lunch, a co-worker consulted with a friend and followed up with TDSSKiller, which found a Redirector item that they "Cured". Then Spybot S&D was run with no virus/malware/spyware found. Another MBAM scan was done and it also gave up the 2 BSOD scenario again after a little more than an hour, this time with about 25 errors.
Sorry for the winded explanation, but I wanted it clear what's been done so far. Question is, what do I do now? Our tech guy can't show up until maybe Monday, but we need the computer now. I thank you for any and all wisdom in advance!