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PC Probs.-Regular BSODS/Screen Freeze, etc ****V2 LOG - NOW ADDED****
Would appreciate any help of likely cause of recent problems that started with my Acer Aspire desktop M3910 which is a 2012 vintage. I've started getting occasional blue screen and the pc which I then have to press power button to turn off pc. Then I can usually turn pc back on and it will restart and continue to work. The reasons given for the blue screens are always different. Other times, I try to turn on and it seems to be going through start up, then the screen goes black and flashes. I have to turn off and try again later - when it will probably start and work normally until the next blue screen - which may not happen again that day or may happen in half an hour.
Yesterday I had a new symptom where the cursor on screen wouldn't respond to the mouse - in effect freezing the screen. Had to turn off and restart and it worked normally for a couple of hours. Sometimes I can use the pc for hours without problems, other times I can get a blue screen or other problem 20 mins after startup - it's quite random. Would appreciate any opinions as to what the likely cause(s) are, and if there's any way I can diagnose it myself. Thanks in advance.
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UPDATE>>>>> Couple of hours ago the screen froze and wouldn't respond to mouse or anything. Turned off and tried to restart about 6 times, but each time I got the initial Acer logo appearing on the screen that appears immediately after turning on. Then the screen went black and flashed with a small white cursor near top left of screen. Wouldn't go any further than this. Left pc for an hour and pc started normally.
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Have managed to figure out the V2 Log Collector. Please let me know if the attachment doesn't work.