Computer use more than two hours or so after the very card

Users questions: My computer uses about 2 hours after the very card. Why are card Pentium 4 1.8, memory is 512. No computer virus, memory is also normal. How the matter? How to solve it? Thank you for the!
Experts answer: 1, the virus killing (with the latest version of antivirus software) Second, check the memory (with eraser Rub finger) Third, check whether the hard disk bad sectors 4, check the CPU fan is the normal operation of thermal glue is dry? 5, graphics (if any) is hot? If the above are not the problem, and finally, a high degree of suspicion motherboard capacitor problems.
  • This information provided by the users.Thanks!