XP restarts on bootup

[mturbo23]

I have been running XP Prof for many months now with no problems.
But recently XP boots up as normal and everything loads but then less than a minute later the screen just goes blank and it restarts!
After it restarts the computer is fine and carries on as normal.

I cant work out what is causing this problem.Any ideas??


PC:
1.5 GHZ AMD XP
512MB DDR
Asus Motherboard
Radeon 9000 PRO 128MB
120GB Maxtor HDD

 

[StormBringer]

Check the Event Viewer and see what it shows.

 

[mturbo23]

In the Event Viewer under System there is an error with Service Control Manager.

The CAILI service failed to start due to the following error:
The service did not respond to the start or control request in a timely fashion.

and directly after that error

Timeout (30000 milliseconds) waiting for the CAILI service to connect.

this error seems to appear a lot, is this the problem?

Thanks....