Guys, plz help me someone..........
This really sounds like overheating to me. Even though you've confirmed that the fans are running as expected, I would check that all the vents are clear, the PC isn't blocked such as in a cabinet, near a wall, etc. and that the room is under 90 F. I would also run an application like Intel Desktop Utilities to check the temperature of the various components. Even with everything I mentioned and no fan problems, you could have an issue with the thermal paste between the processor and its fan, or some other odd thing that's interfering with cooling.