Power causes computer to reboot automatically

The author unit of the computer to bear a large number of computing tasks, 10 days and a half months of shutdown is common. In such a high intensity of work, the failure rate of hardware equipment is also very high.

Failure phenomenon: Two compatible machines, one CPU for Athlon XP 1700+, one CPU for P4 1.7GHz, host Power is the star of the century power supply. When the computer is running at full load for a period of time (when CPU usage is kept at 100%, the hard disk is reading and writing data), it is automatically restarted regularly. One of the 60GB hard disk and a piece of 80GB hard disk, there is a lack of power supply phenomenon.

Fault analysis and processing: Because these two computers are usually used for document editing, Internet and other normal work normally, only a large number of calculations before the problem. began to suspect that the CPU temperature is too high, but the test indicates that the temperature is normal. Check the hard drive found that one of the hard drive appears bad, but in the replacement of the hard disk reload system after the failure is still, it appears that the hard drive bad way is likely to be the computer often abnormal restart caused. The failure disappears after the new power supply has been replaced.

Apart from two old power supplies, it was found that one of the two identical models of electrolytic capacitors (3300μf/10v) had a yellow-brown granular condensate at the top, and a yellowish-brown granular condensate at the top of the two different electrolytic capacitors (1000μf/16v,3300μf/16v) of the other power supply. This is caused by the breakdown of the capacitance by the leaking fluid. After the electronic market to purchase the same type of capacitor replacement, after the test are back to normal. Here is a reminder, do not put the capacitor positive and negative to the opposite!

After the analysis found that the author of the Unit power network often due to overhaul or improper use of electricity suddenly power outages, resulting in the capacitance of the accessories are breakdown, a motherboard has been in a sudden blackout after the strike, check found that a few large electrolytic capacitor breakdown leakage, replace the capacitor back to normal.