Unexpected Shut Down In Window

I have been experiencing an unexpected shut down with my laptop since I got it which was in Jan 2008 up till now 5 times >>>>it happened in a month twice where there is a gap of two month between the incidents.. Today was the 5th and I was able to write what the report said on the blue screen since I have made my setting for the computer not to reboot after an unexpected shutdown... Don???t know if I could get a help here as to what could be the cause... some are listed just don???t know where to start from or what to do or if I can do anything before sending it to the vendor..

Note Usually after this shut down the computer reboots and all goes back to normal The problem is a blue screen with the following written on it:-Problem has been detected and windows has been shut down to prevent damage to your computer.check if you have adequate disk space. If a driver is identified in the stop message, disable driver or check with the manufacturer for drivers updates. change video adapter. Bios update check with your vendor. Disable bios memory options such as cashing or shadowing, if you need to use safe mode to remove Or disable components, restart your computer, press F8 to select advanced start up options, and then select safe mode. and of course while all the above have been written on the blue screen the following also was going on:- Collecting data for crash dump Initializing disk for crash dump. Beginning dump of physical memory. Dumping physical memory to disk. Physical memory dump complete. Note Usually after this shut down the computer reboots and all goes back to normal