I ran a software update and installed the latest Intel Mobile Chipset 4 drivers, and the screen blacks out in the middle of the install. this continue for ten minutes until the computer sleeps, and restrting fails to boot to the login menu.
I use Safe mode to uninstall the drivers, and on the next boot the computer works, and installs drivers. after a reboot everything is working. but three minutes after the reboot, the auto updator rcognizes new drivers, and installs and kills the computer again faster before I can stop it.