How to Dismantle your computer

Disassembly and Reassembly Of PC

Disassembly
Disassembling a computer is a straightforward task. In most cases, you need to remove little more than the outer cover of the case to gain access to the memory, expansions slots and cards, and the CPU (central processing unit). Because there are many manufacturers, each seeking to establish its own unique marketing identity, each brand has some custom components or layout. The best strategy for efficient disassembly is locating and using the manual that came with the computer.
Often, manuals don't provide a lot of technical information, but they usually tell you how to remove the cover. The extent to which you have to disassemble a computer depends on the specific problem or repair. Following the procedure outlined here will help you establish a routine for completely and efficiently disassembling most computers:

●Make a complete backup of necessary operating system and working files.
Document the system (hardware and software).
●Create a clean work area with plenty of room and light.
●Gather all the necessary tools for the job.
●Implement all proper safety procedures.
Turn off the computer.
●Disconnect the power cables.
●Wear an antistatic wrist strap.
●Locate the screws for the cover—check the manual to discover the location of the screws (sides or back).
●Remove the screws. It's a good idea to store them in a box or plastic tube to keep them from getting lost.
●Remove the cover from the computer.
●Document the location of expansion cards and drives.
●Remove all the cards and place them in antistatic bags.
●Document the location and connections for each drive (pay special attention to the red wire on the data cables—this identifies the location of pin 1 on the device and driver).
●Remove the data and power supply cables.
●Remove the drives from their appropriate bays—look on their sides for the screws (check the manuals).
●Remove the motherboard.




Reassembly

To reassemble a computer, simply follow the same procedures as for disassembly, but in the reverse order. When installing components, remember the following:
Do not force connectors into place—if they don't fit easily, they are probably in the wrong place.

●Expansion cards often require some force or side-to-side movement to fit into place, but do not force them.
●When removing cables, remember the pin 1 locations. Check notations on the circuit boards and look for the red wire on the ribbon cables.
●Connect the cables to the drives before installing them in the bays.
●Test the system before replacing the cover.
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