Keith helped me on saturday by giving me a list of things to do - prefetch, disc clean up, disc defragmentation and sfc/scannow....
When i managed to finally do the sfc/scannow, windows didnt prompt for the cd so i guess it didnt find anything wrong.
The latest is - the crashes seem to happen during the night when pc is not in use. In the morning I come through and the rebooting is in a loop....every minute. I quickly managed to get the following error before it rebooted - 'services and controller app encountered a problem and needs to close'. So I tell it not to send the report then the countdown to shutdown begins. Open command line and type shutdown -a to abort and it stops the countdown window but still reboots a few seconds later.
This morning, I cannot get it to stop......its constantly in reboot loop -- please any suggestions!!!???