OMG, so pretty much the worst thing that could've happen to me, is to be without PC last 2-3 days...my Gosh, it all started after the last Windows 10 Update (16.11.- at least it updated it for me at that date), I've been getting blue screen of deaths 24/7, after trying to ''reset'' the PC (the win 10 feature), an error came again....after trying to completely reinstall Windows 10, after cleaning my hdd, after having to convert it to GPT from MBR, after everything I had to do, the installation crashed my PC, it went off and couldn't start, different kind of alarms were beeping the fuck out of it after each press on the power buttom lol . After trying and trying and changing the components, trying to figure out what piece of shit is broken, after I was sure that my GPU isn't making those problems, I thought the hdd may be an issue, but nope, it's good, after all it seems that my RAM is the actual issue, even tho I just changed the slots, cuz I have 4 slots but I use only 2, and then, tried everything again, praying those 30minutes while it's installing and hoping it won't crash again I finally did it, I was kissing my USB for 10 minutes cuz it finally made it hahahaha, but then BOOM; all dreams gone, 64bit system, all good, but still only 4GB of ram can be used. Even tho it says that the actual size is installed, but I can't use the full ram I have, only 4GB, after trying to do the msconfig-boot-advanced settings- uncheck the memory thing, still didn't work, even tried to uncheck-restart-check-restart-uncheck-restart still the same...only 4GB can be used. After switching my RAM to a other system with Windows 8.1 installed, it reads my whole amount of memory, switching it back here, same shit, only 4GB, after reinstalling windows AGAIN, again same procedure, and I was like, omg is this doesn't work, idk, I'll smash the fuck out this PC....and guess what, IT STILL DIDN'T ALLOW TO USE MORE THAN 4GB, after reseting my BIOS and making sure it's up-to-date, it still didn't work...I guess it's either time to buy new RAM or it's time to switch to Linux...I just can't, I'm not sure wtf is going it with this crap, and how am I going to deal with it anymore.....