According to Intel, the T5500 CPU, which the A105-S4344 uses, supports Virtualization Technology. Using Intel's tool which identifies CPUs and shows their capabilities, it says "No" to supporting VT on my laptop. The T5500 CPU is listed as supported on Parallels very own "no VT" page that their software installation took me to. I see on the Toshiba support site for BIOS updates to the A105-S4344, version 5.60 has "Updated: Virtualization Technology function" listed. So, apparently it's disabled in my Toshiba laptop BIOS.
Currently, I am using BIOS version 5.90, and I do not see any Virtualization Technology option. I was going to try to downgrade the BIOS to 5.60 or 5.50 to see if the VT option would show up. As I feared, when I tried, the BIOS update program says that it will not install a previous version. Is there a way to force the BIOS update to happen? Or is there simply another way (like a hack or software program) to turn on VT in my laptop??