Vista restarts for no reason

[K-Mind]

I have a new laptop. It came with Windows Vista. But due to some reason it reboots on its own. I cannot figure out why this is happening. There might be some kind of problem with the same. There is error code nor there any beep indication on it. It works fine, but after a few minutes it just restarts on its own.

[CoYoTeA]

It can be due to power failure or something. I will recommend you to show the laptop to nearest service center. Because somehow a damaged or improper battery can cause power failure. Try to remove the battery and then connect the charger only. Then see whether it works or not. If it is working then the battery is not fine and you will need to ask for replacement.