Blue screens dont always mean a physical problem, or that your hd is physically giving up, as an example. My own pc started freezing frequently just over one month ago, and also causing the far less frequent, but just as annoying, blue screen. the freezing has to be the worst thing ive ever experienced on a problematic pc! to date, no problems as of yet-after I uninstalled Comodo antivirus/firewall Suite. At a guess, I think it was some sort of incompatibility with Comodo together with either another program also installed at the same time, or installed windows software/drivers. impossible to tell, but im crossing my fingers it doesnt happen again.
after a crash on your own pc you should be able to check your event viewer, to try and find out if it gives a hint/error log with info on what was causing the problem. unfortunately on my own pc it did not state anything wrong, but its worth noting the time/date of any crash or blue screen and then checking it out click here
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