1. Touch a metal object to discharge static electricity (if there is static electricity on your hand, it may puncture the patch element on the touch panel). Static electricity is the first killer, including when there is a lot of dust on the components, it will also produce static electricity at the moment of starting (inferior power supply is the second).
2. Unplug the power plug behind the power supply and completely cut off the power supply (otherwise it may be turned on instantly when plugging or unplugging the memory or graphics card; And the hardware is not inserted in place, causing a short circuit).
Unplug all wires such as keyboard, mouse and earphone on the back panel of the chassis (otherwise, when disassembling the motherboard, you will wonder why the motherboard is stuck and can't get out? )
3. Unplug all power and data cables from the motherboard, video card, CD-ROM drive and hard disk.
Unplug the switch connected to the chassis under the motherboard, restart, hard disk light and USB front interface.
4, remove the graphics card (note that the far right, general graphics card slot has a small card feet, lock the graphics card, move or break it first).
5. Unscrew all fixing screws of the motherboard and take out the motherboard.
6. Put the motherboard on a flat surface, and then remove the memory and processor (because when the motherboard is in the chassis, most of the processors and memory are suspended. If removed, it will cause the motherboard to bend down.
7. The optical drive and hard disk are finally taken out (at this time, the inner cavity of the chassis is empty, just unscrew the screw and pull it out, so don't worry about touching any hardware). Includes a power supply.
Desktop:
A desktop is an independent computer, which has nothing to do with other components. Compared with notebooks and netbooks, mainframes, monitors and other devices are generally relatively independent and generally need to be placed on computer desks or special workstations. Therefore, it is named desktop.