My notebook(Acer Aspire 5315) shuts down randomly ever since i upgraded to Windows 7. The tech guys that made the upgrade told me it's just a coincidence.They run a few tests and nothing happened. I've try run the computer on battery alone and shuts down anyway.However i'm convinced it's overheating because when it goes down the keyboard gets quite hot. I have the suspicion the fan is not working properly for whatever reason.Is anyone with the community has a similar problem with this model?if so,a feedback would most welcomed.Thanks