How to determine CPU fault -- www.sales-batteries.com

March 3, 2011 - PRLog -- Learning through the power of maintenance, A King already know a power failure occurs the computer will not start, work instability. However, A King can not understand why sometimes even the power supply working properly, the same fault also appears the same reason, so he found the master and eager to know the reasons. It so happened, the master is also ready to explain the content, so the A side of King will sit quietly, listen carefully to them.

When the computer appears to run unstable, and so can not start after power, if you exclude the power, memory and software viruses and other factors beyond the possibility of triggering a failure, the next CPU will need to check whether there is a problem. Failure caused by the CPU performance, although varied, but can be summed up in nothing less than the frequent crashes, POST displays the work of the frequency of repeated changes, and can not boot due to excessive overclocking, and system power without any reaction after several way. Of course, should not the same way also the following, we will be introduced:

1. Frequent crashes

This failure are quite common, mainly due to generally poor work by the cooling system, CPU and the socket is bad, BIOS settings relating to CPU temperature errors caused alarm. Measures taken by the main CPU is also related to heat, and check the reliability of connectors to the BIOS settings. For example: check if the fan normal operation (can be replaced when necessary, or even a large amount of exhaust fan), check whether the heatsink and CPU access to good thermal conductivity is uniform was coated with silicone grease, and remove the CPU check the pin and socket contacts are reliable, enter the BIOS settings to adjust temperature protection points.

2. POST does not show the normal operating frequency

The performance of specific work for the boot CPU frequency reduction, the OSD "Defaults CMOS Setup Loaded" prompt, reset the CMOS in the CPU parameters, the system return to normal display, but the fault appears again. For this situation with the CMOS battery or the corresponding circuits on the motherboard. The first event of the failure to follow the principles of the easier maintenance, the first measurement of the motherboard battery voltage, if the voltage is lower than 3 volts, should consider replacing the CMOS battery. If replacing the battery did not take long, trouble appeared, it is a CMOS power supply circuit board there is leakage of components, then take the motherboard repair.

3. Can not boot due to overclocking too

After over-overclocking, that may occur when the computer starts normally cooling fan rotation, and hard disk light flashed only it would not be a reaction, the display also maintain standby failures. At this time can not enter the BIOS setup options, therefore, will not be able to reduce the frequency of the CPU. Treatment of such cases in two ways:

(1) open the case and found the motherboard to the CMOS discharge jumper (button batteries are generally arranged in the vicinity), set in the "CMOS discharge" position or pull the battery out, wait a few minutes a little after then reset the jumper or the battery and reboot your computer.
(2) Most newer motherboards now have a dedicated overclocking failure recovery measures. For example: You can hold down the Insert key in the boot and hold, this time the system starts to enter BIOS setup options will automatically, and then to the down-conversion operation. In some of the more advanced motherboards, overclocking can also take the initiative after the failure of "self-healing" CPU's default operating frequency. Therefore, the lack of enthusiastic hands-on experience overclocking but the average reader, the choice with the "trillion by overclocking," "Overclocking failed automatic recovery" and other features of human nature motherboards, overclocking CPU's work will become very simple easy.

4. Power system does not respond

Usually in the face of this failure can be "replacing" to determine the exact location of fault. If the elimination of the motherboard, power supply lead to the possibility of failure, you can determine the problem and the multi-CPU for internal circuit damage. If so, then it can only be resolved by replacing the CPU.
Tip: Some people think that the higher the CPU fan speed, cooling the better, in fact, this understanding is more one-sided. In fact the fan cooling capacity and the number of blades, angle, the effective ventilation area, exhaust volume are directly linked to, and improve the speed, although the amount can increase ventilation, but the increase will bring noise, shortened life expectancy and other issues. So, the choice should be taken into account when the cooling fan.

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