Maybe this is a silly question but is there such a thing as "breaking in" system RAM? I have this computer I just built and I was getting random freezing frequently (like once every 1 hour or so). It was happening in different programs, once on the command line compiling something, another time idle with Firefox open (I left for a few minutes and came back and it was frozen locked up). So, wondering if the RAM was the issue, I booted into MemTest86+ and ran it for 24 hours. It finished 8 passes with zero errors. After booting the machine back, I've used it to two nights with no more freezing, even when compiling the same program several times and using Firefox a bunch. I made no other changes to the computer at all. I'm still worried something is wrong but I don't know what. Is there any possibility that running MemTest86+ "broke in" the RAM and fixed what was wrong? Is that even possible?