Running a windows vista home premium 64 bit. It was turned on, and working fine about 6 hours ago. ( Well, it was working mostly fine. About a month ago it started making a high pitched whining noise. I took it apart and dusted and put it back together but it the whining noise still continued.) When I went to wake it up there was no signal to the monitor. After waiting a while I restarted. The restart hung/froze the start up screen, "searching for devices". After another hard restart, The PC was able to boot to the desktop but froze after about 30 seconds. There was a strange visual glitch and then the computer restarted again, showing the Hewlett Packard start up screen. I turned the computer off and have not yet messed with it since. This computer was purchased from Best Buy in 2008, and did not come with a recovery or system build disc. I wanted to check here to see what next steps I should take to repair the problem before trying anything on my own. Advice?
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