I have a Sony VAIO VGN-CS190J. I upgraded to Windows 7 Professional 64bit about 4 months ago and am now having issues with my computer randomly shutting down. It will instantly freeze up for like a second and just shut off to immeidate power off. There is no BSOD or a restart. It just instantly shuts down.
It has happened while doing flash applets, surfing the web, and playing games on my computer. It even happened one time while I was on Microsoft Word. There is also the occasional occurence where the computer will shut down immediately shutdown before or during start up.
Does anyone know how to fix this or if there is a known problem of this happening?