My new computer appears to be having seizures.
At irregular intervals, separated by several days so far, suddenly the screen goes black; I shut the computer off and restart it and it proceeds normally; however, it doesn't remember any of my passwords after this happens. So far when these events have happened the circumstances were: (1) I was not at the computer at all; (2) I was running a backup program; (3) I was peacefully listening to a YouTube gospel video.
Can anybody tell me what this is, or might be -- and what I should do about it? My BIL who gave me this computer says that it has never once done this during the time when he had it. He thinks it might be a software error of some kind, which doesn't tell me anything.


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