Before running procedure

I recently did a new install of Vista on my PC due to conflicts some programs where having that I could not get resolved. After the install I downloaded Pc Tools firewall and anti-virus and IOBit Security, along with Spyware blaster, Advanced Spyware Remover, and Super Anti-Spyware. I was having a problem where I would sign out of my computer and go to bed and when I got up in the morning I was unable to open any programs when I signed in. I would go to the Start menu and click on the arrow to restart and nothing would come up. I would try to open other system options and nothing. I would hit Ctrl/Alt/Delt and nothing would come up. I am assuming it is a problem with the programs working together so I removed all of them and went with Comodo, AVG, and kept Super AS, ASR, and downloaded Advanced System Care along with Spyware Blaster again. The same thing happened this morning. I have currently shut off System Restore and am running all the scans available on my system right now, but I am inclined to think it is something else. Is it possible I have something set wrong that creates the conflict? I did notice that upon restart the bottom bar loads in sections rather than all at once. If it is probably malware I will follow the instructions, if you think it is a system setting issue please let me know and move this thread. It does not do it throughout the day when I sign out and sign back in, only when I sign out overnight and sign in when I wake up. Thanks.

Vista - SP1
500GB HD
4GB Ram
Dual Core 8800GT Graphics (x2)