First off, I'm not sure if I am posting in the right thread for my issue but....here I go. So earlier in the day, I had an old system that has an AMD FX 4300, 12 GB of RAM, MSI 970A G43 Plus, and an XFX HD 7970 3 GB that I wanted to get running again after it has been collecting dust for the past 2-3 years. It originally turned on fine, but I noticed in Windows 7, the system had 12 GB in the system, but only 6 (or 5.90) to be specific was only usable, and that was a big issue for me because many games need at least 8 GB to run it. I had two Crucial 2x4 1600 MHZ kit of ram, but I also had a 2x2 kit of some crappy RAM that ran at 1333 MHZ I pulled out of a system to stick in my PC for just that little more RAM to be available for my games. I was a newbie at the time, and didn't realize that mixing RAM isn't the best thing to do, and I saw overall the systems memory was running at 1333 MHZ. But anyways, I decided to pull out the 2x2 kit of ram that I put in to see if my problem in Windows with the Ram usability would fix it, but now I am finding out that my PC fans just spin quickly for a split second, and then turns off without me even touching the power button, and this goes on indefinitely. I am sure I didn't damage anything when I pulled out the RAM sticks, but I am right now stuck at this problem, even putting the the RAM just the way it was before and even going far to make sure I put the RAM in the same slots it was before I turned off the system. Sorry if I wrote like a while paragraph, I just wanted to make sure I go into detail on what I did for the time being. Thank you.