Urgent problem please help.

Hello i need some help with my laptop.

When i start my laptop normally and it boots etc. It automatically restarts itself after 5 seconds. I dont even have enough time to put my password so that it logs in. Right now i am in Safe Mode with networking, it doesnt happen when i boot it in safe mode. Is this some sort of virus or something wrong with my hardware?

HP G60 Laptop
NVIDIA GeForce 8200M G
Windows Vista Home Premium 32Bit

try this How to perform a clean boot procedure to determine whether background programs are interfering with a game or a program that you currently use if it boots turn all the disabled startup items back on 1 by 1 rebooting each time till you find the culprit

To make sure .....:

Do a complete system scan with these ..:

Malwarebytes.org
SUPERAntiSpyware.com - Downloads