Barebones

No, installed 2010 version, all was fine, then freeze and crash, message Windows Explorer stopped working looking for solution, restored PC to an earlier date.

No they never made any reference of a support tool.

Yes I have installed 2010 internet security, it's frozen once so far.

Sorry I am new to this here is the ticket 201108071004733 Vista home premium 32 service pack 2 2 gb ram Pentium R 2.80 no other security only Bitdefender. 2011, then 2012, back to 2010

I have already done all that you suggest, the lab tells me there is nothing wrong with my PC. I now have 2010 installed same thing is happening, freeze on scanning and then PC freeze I have to shut down with on/off button.