Hi Michael,
Thanks for getting back to me.
The problem has existed ever since I had my PC back from a shop to be honest and I have since upgraded to Windows 7 and had the problem still since. There is no date I can roll back to now as it all started on a previous operating system.
I did have a log at the event viewer though like you said and can see various errors through the system when I click on the left hand side that say the following:
The computer has rebooted from a bugcheck. The bugcheck was: 0xa0000001 (0x00000005, 0x00000000, 0x00000000, 0x00000000). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: 082311-19484-01.
Then the nxt messgae in event log says:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Does this help at all?
Thanks again
Dan