Hi all, i've recently been having some serious problems with my acer laptop running vista. The main problem is i can very rarely actually start the system up, after being turned on the fans start going and such then suddenly stop and nothing will happen but a black screen, although the power lights are on. I have to turn it off and on again several times to get any life out of it, occasionally i will get the screen giving an option to press F2 for setup, but this sometimes freezes, very very rarely windows will actually start up and can be used as normal. However, everytime this happens i have noticed the computer clock changes back to June 1st, 2005 at 1am. I have googled about this problem and i have seen sometimes this date change can resort to problems with an internal battery? Does this sound at all plausible and could it be affecting the ability for the system start up? Thanks for reading, hope someone can help.