Vista - Windows Visa Home Basic Major Problem

Hello everyone,

I bought Fujitsu Siemens Laptop with Windows Vista Home Basic installed in it. I have installed every necessary things such as Anti Virus, windows update is done, etc.

Either I am doing my work or just on desktop, the laptop gets hang and I am unable to do anything other then switching laptop off by pressing the switch off button for a while. Mouse gets stuck, keyboard doesn't work at all. There is no virus or trojan in my laptop as I have formatted my laptop and tried twice but still the same issue!

Can anyone please help me out of this problem?

Looking forward to the pleasure of hearing good news from you soon.

Thanks and best regards,
AbdulBasit Makrani