Hello people! First things first, yes i did see the "Overheating problems" sticky thread. But i felt like i needed to start this as another thread coz of the long history of actions that i have taken to try solving my problem... And plus, i am bugged, frustrated, humiliated and baffled now! Here is my config :- Intel P4 3.0 GHz Processor with HT Technology Intel 865GBF Original Motherboard XFX Nvidia GeForce FX 5200 Graphics Card 512 (x 1) MB DDR RAM Iomega 8x DVD Writer Samsung 80 GB Hard Disk When i bought the pc around 1.5 years back, everything was fine and it worked like a breeze. But around 8 months back, the pc started to shutdown automatically. Shutdown as in, just turn off as if there was a power failure. On restarting it, i saw some message like "The CPU was shutdown because of a thermal event (overheating). Service the unit right away to solve this problem." Okay, now here it all starts. I ran my pc with the cabinet open for some days, and it helped a bit. But still the problem became more evident. And then, I did ALL of the following things to solve the problem... 1.) Changed the location of my PC to some place where more air flow is available. Didn't help... 2.) Called up the computer technician. He serviced the unit, but the problem persisted. 3.) The technician applied the thermal paste that has been mentioned in the sticky thread. Still, the problem persisited. 4.) I sent my motherboard for a replacement to Intel. Had to wait for more than a month. Finally i got a brand new replaced motherboard installed. STILL, the problem persisted!! 5.) I installed one extra fan in the cabinet, to enable proper air flow. Still no difference... 6.) I got the fan on the processor changed. (Yes, i even tried re-seating the old fan a hundred times!!) No difference... 7.) I got my RAM, Graphics Card, Processor, SMPS and motherboard checked again. I figured out that i had a 300W SMPS where as i needed 400W. So i got my SMPS changed to a brand new 400W supply. No difference... 8.) I removed my graphics card and used my pc. No difference... 9.) I got my motherboard (the replaced new one) checked by another technician, who told there were minor problems with it. He repaired it. Still problem persisted... 9.) I installed utilities like SpeedFan 4.31. It shows the CPU temperature close to 80-82 degrees celsius in normal operation, i.e. when the pc is idle and doin nothing at all!!! And when i run some heavy app or a game, the CPU temp goes to 110 degrees celsius!!!!!!!!! After that, it shuts down. I tried touching the processor sink, and yes, it seems HOT. But it didn't burn my finger for around 2 seconds... Also, SppedFan shows my Fan1 speed as just constant 29 RPM. Is there a problem here? 10.) Now i have another technician saying that it is the motherboard-processor compatibility problem. He said that 865 boards cannot handle 3.0 GHz processors. He has asked me to change my board to either 915 or the new D101... This dumb box is becoming a pain for me now! I would be really grateful and obliged to someone who can figure out what on earth the problem is with this idiotic box!! I just wanted to post this problem here before i try getting my motherboard changed! Any takes??