Greetings and salutations all! I hope that I'm in the right place with the problems that I am having. I searched through several posts, but only found one that is similar to mine. Perhaps you all will be able to help me out or provide some information. It seems that most of the other posts have multiple BSoD problems, but I'm suffering from something different. I'm experiencing numerous lock ups or freezes with my computer. This all begin last night after never really having any major problems. (I did of course have the random freeze up every other week or so in the past.) At first, I thought the problem to be video card related. These freeze ups mostly happened while playing some sort of game. (League of Legends, Team Fortress 2, Fallout, etc.) I cleaned my PC, reseated the video card and ran some temperature checks. My PC sits at 29C/78F in BIOS. The CPU fan is currently at 2600 RPM which I believe to be healthy. I did notice that there was a fan labeled "nForce Fan 0 RPM". I was not familiar with it and checked to ensure that my video card fan was spinning and it was indeed spinning. After entering Windows, I would experience more freeze ups while not doing anything video intensive. For example, simply starting some programs - firefox, or low resource programs I would freeze up. At times I could move my mouse around and other times I couldn't forcing me to restart my PC. This always seems to be the most frustrating problem because locating the problem is difficult. After asking some fellow gaming buddies, I've been told it could be the CPU Fan, my PSU, and the motherboard. My PSU seems healthy, as I can leave the PC on with no problems. The CPU fan seems healthy as well unless there is something I'm totally missing. I'm not completely ruling these out however. Mostly the freeze ups occur within 10-15 minute intervals. Being paranoid, I ran CC Cleaner and Malware Bytes to make sure malware didn't sneak onto my PC. The test managed to finish and came back with 0 results. My own thoughts would be possibly a burnt up ram stick, which another user, bluewave, had found to be the problem. With all of my friends however, I now have a list of things to check for. I thought I would check with you all first to see if anyone had any similar problems with solutions. I'm currently using another PC, but here is the run down of what I'm currently using from memory. Windows XP EVGA nForce 650i Ultra Socket 775 Motherboard (perhaps this was the nForce fan?) Intel Quad Core 2.4Ghz Q6600 CPU 4 gigs of Ram - OCZ Plat DDR2 800MHz Seagate 250GB Sata drive/640 WDGB Sata drive nVidia 8800 GTS Video Card 39 Processes after start up (Thats all I can think of at this time.) Once again, these are freezes ups with no full system crashes or BSoDs. At first I thought it was overheating, but with one side off and a fan, it seems this isn't the problem. Thanks so much for taking the time to help me. Have a good day.