1-Computer assembly and maintenance

First, the hardware composition

1, CPU (central processing unit)

1> frequency: CPU core operating Clock

Front-end bus frequency <fsb>: Directly affects the speed of CPU and memory data exchange

2> cache: Alleviates the speed difference between CPU and memory, L1 class L2 level Two

3> Common brands: Intel AMD

2, Memory: SDRAM, DDR,SD, main parameters: capacity, frequency

3, Hard disk: interface type: Ide,sata (mainstream), SCSI, SSD main parameters: capacity, number of RPM, interface type

4. Optical drive: CDROM-RW DVD-RW

5, Graphics: interface: PCI, AGP, PCI-E chip, capacity

Second, BIOS introduction

1, basic input and output system: The basic hardware information of the storage computer, not casually hot-swappable

2, the role of the BIOS: power-on self-test, initialization, boot operating system.

(the "CMOS battery failed" motherboard appears to be low on power and requires battery replacement)

Third, trouble-shooting

1, when the keyboard error or does not exist, the computer will stop start, the display "keyboard error or no keyboard present press F1 to continue ..."

2, according to alarm sound troubleshooting:

Buzzer Ringing---Memory error, clear dust or memory slots, wipe memory with eraser with gold finger

Buzzer issued a long two short alarm sound: The video card is wrong or does not exist, the way of processing ibid.

Iv.. Expansion:

BIOS settings: 1, disable USB

2. Shielding logo

3. Modify the Startup item

4, restore factory settings and so on

1-Computer assembly and maintenance