After that, you're the computer maintenance engineer.

The second part common fault judgment

This section classifies the computer from the boot up to the shutdown period. Each kind of judgment, localization process is the part of the first part of the "Maintenance judgment" section of the organic components, that no matter what method to use or whether to judge what content, these two parts are always in combination with each other.

The failure phenomena listed in the following fault types are only part of the phenomenon, some of which are not listed, and some cannot be categorized. Therefore, this manual is only for the listed and can be categorized in the fault phenomenon to provide appropriate methods and ideas for the diagnosis, and provide a basic method of elimination. And for the other failure to classify the phenomenon, we will be in the future work of the continuous collection, collation summary, and then the desktop Computer Maintenance guide to enrich.

Chapter one The fault of the power-adding class

An example of a definition

From the power-on (or reset) to the self-test to complete the process of the computer failure.

Second, possible phenomenon of failure

1, the main engine can not be added (such as: power supply fans do not turn or stop, etc.), sometimes can not be added power, boot off, chassis metal part of the live;

2, no display on the boot, alarm;

3, the self-test error or panic, self-test process shown in the configuration and the actual discrepancy, etc.

4, repeated restart;

5, can not enter the BIOS, refresh the BIOS after the crash or error, CMOS power off, clock is not allowed;

6, machine noise, automatic (timing) boot, power equipment problems and other failures.

Iii. parts that may be involved

Mains environment: power supply, motherboard, CPU, memory, display card, other possible board, setup in BIOS (can be restored to factory state by discharge), switch and switch line, reset button and reset line fault.