My Computer Gets Restarted

Hi Guys,
My computer get restarted if i connect my sony ericsson k310i to my PC.
In FileTransfer Mode:
if i connect my phone in FileTransfer Mode, suddenly my PC get restarted. So i connect my phone while the PC is booting Xp.

In Phone Mode:
I can connect my Phone with PC in Phone mode without restart problem. But after removing the data cable my PC get restarted. So i turnoff the PC to remove the phone.

So i searched in google. There is no working solution to this problem. I think many of the users has faced this problem. help me to solve this problem.

help me soon

the problem is with you computer, changing your PC RAM will solve your restart problem