After many times of testing, I realised it was the PCI Wireless Card Adapter. However, I brought the computer home to use, the auto shut down problem did not happen at all ( everything was the same, no removal of any hardware). Can it be the office electricity current be the cause of the problem? The computer never had such problem in the past, the auto shut down problem only started last week.

Technorati Tags: adminstrator auto shut down electricity hard drive heat problem pci virus