BEX Event/Error: Killing Chrome, Firefox, AND Explorer

Yesterday while using Firefox I noticed it kept crashing, with the cause being a "BEX Event". I try opening it to no avail, everytime terminating immediately after I clicked on it. I tried Chrome and Explorer, but both of them suffered the same problem, immediately crashing due to the BEX error. I restarted my system multiple times to see if it subsides, but it reappeared promptly everytime for ALL three browsers (!) I tried Safe Mode with networking to see if its gone. Nope, same problem, with Explorer and Firefox collapsing instantly, while Chrome seem to take around 10-12 seconds of surfing before flatlining due to the same cause.

I then decided to use System Restore and managed to take my whole system back to 5 days ago when none of the problems were happening. Tried again, but nope, same issue with a BEX event. This time it seems Explorer would display it as BEX64 instead of just BEX. I tried resetting entire settings for Explorer, but the BEX error would always prevent me from doing so by shutting down the whole things before its done. I thought, maybe, just maybe, it has something to do with a faulty DEP on Explorer, and added it the list of exceptions for DEP. Still didn't work, and the system wouldn't let me add Chrome and Firefox to the list either. I tried to see if maybe I can download some new antivirus or antispyware programs off the net, except that none of my browsers work, so I have no access to the Internet in both normal and Safe modes.... Sufficient to say I am typing here from a library's computer.