I bought 2 computers about 2 to 3 years ago both the same brand ( Store Built ) both ran fine and just about a month ago 1 of them started having a problem. Start running slow and then when I did a restart all I would get is beeps ( three high pitch beeps and then 2 low pitch beeps ) If I let it sit for an hor or two, it will just start up like normal. Now the second computer is doing the same thing. any ideas?