System boot exception caused by CPU fan _ hardware Maintenance

Recently, my friend rush to find me, said his computer can not start the normal. The monitor does not light up after power-on, and the PC speaker keeps issuing the alarm sound.

The author first thought may be after the long-term use of accessories due to loosening, so disconnect all power, the video card, CPU and memory strip, and then carefully plug again. The monitor still does not light up when it is powered on again. The author of the hard disk data cable and soft, hard disk I/O part of the careful examination, also did not find any signs of loosening. Is there bad contact on the line? Then, with Tape, the various interface parts were tested. However, no short circuit or bad contact was found.

I quickly asked friends about the recent use of computer. Friend said, he was only a few days ago to the CPU to replace a high-power cooling fan, and replaced the new fan after this situation. But the fan was tried in a computer city and there was no problem when used on someone else's computer.

The next day, the author will own CPU fan "chief refrigeration officer" removed, again came to friends home. Newspaper try the idea of a friend of the CPU cooling fan removed, put on the author's own. After the boot, everything back to normal! It seems the "culprit" of the whole incident is a friend's new CPU fan!

In view of the use of a friend MSI 6163BX motherboard, the author suddenly thought that the series of motherboards with the fan speed function. I guess, is not a friend of the new fan does not support this speed? So I entered the motherboard BIOS settings, see the fan speed function is really open! Quickly will fan speed off, shut down after the friend of the cooling fan. Not out of the author expected, this time all normal! In this way, everything is "good"--for the motherboard without fan speed, the use of a friend that the new fan will not be a problem, and for the motherboard with this feature, the CPU fan speed can be closed to avoid the failure of the occurrence!

So remind friends, in the face of such problems and other methods do not work, you may wish to start with the hardware, to see whether there is a new purchase accessories do not support a particular function of the situation-such as this example CPU fan does not support the board speed function. This may make seemingly intractable problems "solved" it!