ALL text/desktop corrupted

[Monkeyman]

After a while powered up (anywhere from a few hours to a few days), things start to get corrupted.  First (usually), it's random text.  Soon, it's ALL text (in and out of a browser) and finally, it's EVERYTHING including the desktop (it will show corrupted images of "stuff", usually from my last browser session.  This time, everything was jacked up except the toolbar.  A quick reboot and everything is fine again.....until next time.  The last time I played around with Linux (Ubuntu, I think), the same thing happened (on my SSD....I'm using a HDD this time) and I reinstalled Windows as nobody could figure it out.  It's not allowed to attach a screenshot but I have one if someone can figure out how to get it.  If this keeps up, I'll go back to Windows again.  (2 different HDDs (1HDD, 1SSD), same computer, different distros)