The computer host is dirty, how to deal with it?

After cleaning the external equipment, the most important internal cleaning of the host begins. Because the chassis is not sealed, a lot of dust will accumulate in the chassis after a period of time, which is very unfavorable for the operation of computer hardware. Too much dust can easily lead to computer failure, and even cause serious consequences of burning hardware. Therefore, it is very important to dust the interior of the host, and it needs to be carried out regularly, usually once every three months. The above work needs to be carried out regularly. When cleaning, just clean the computer shell.

1. Remove the host.

Note: Before disassembly, please turn off the machine, discharge static electricity or put on anti-static gloves, and then do the following operations.

Step 1 First, unplug all peripheral wires on the back of the chassis, unscrew several screws on the back of the chassis with a screwdriver, and then remove the chassis cover.

Step 2: Then, put down the host computer so that the motherboard faces down, unscrew the screw fixing the upper edge card of the bar window with a screwdriver, then pinch the upper edge of the interface card with both hands and pull it out vertically (as shown in Figure 6).

Step 3 Next, unplug the hard disk, CD-ROM drive and floppy drive horizontally. The method of unplugging the data cable is the same as that of unplugging the power cable. Then, use a Phillips screwdriver to unscrew the screws on both sides of the drive bracket to fix the drive and take it out.

Step 4 Unscrew the four screws between the back of the chassis and the power supply, and then remove the power supply (as shown in Figure 7).

Tip: When tightening the last screw, be sure to hold the power supply with your other hand. Otherwise, the power supply will fall and hit the motherboard.

Step 5 Unplug all kinds of wiring plugs inserted in the motherboard. When unplugging the double-row 20-pin plug of the power supply, please pay attention to the small plastic card on the plug, hold it and pull the power supply plug vertically upward.

Tip: Because these plugs on the motherboard are complicated, it is recommended that you make records before unplugging these plugs, such as the color of plug wires, the location of sockets, the arrangement of socket pins, etc. , so as to facilitate the recovery after dust removal.

Step 6 Pull out the plastic clips at both ends of the memory slot with a little force, so that the memory stick can jump out and take out the memory stick.

Step 7 When disassembling the CPU radiator, first press the elastic piece at the far end, so that the elastic piece can be separated from the card slot of the CPU socket, and take out the CPU radiator (as shown in Figure 8).

Step 8 Unscrew the screws that secure the motherboard to the chassis and take the motherboard out of the chassis.

2. Start cleaning up. After demolition, the next step is to dust them and restore their original appearance.

Step 1 Clean the motherboard. Clean the dust on the surface of the motherboard with a brush first. Then clean all kinds of slots and drive interface plugs with an oil painting pen (as shown in Figure 9). Then blow out the dust with a leather tiger or a hair dryer.

Tip: If there is oil stain on the metal pin in the slot, it can be removed with absorbent cotton ball dipped in special cleaner for computer or anhydrous alcohol.

Step 2 Clean the memory module and adapter card. You can first gently clean the dust on the surfaces of various adapter cards and memory chips with a brush, and then blow it clean with a leather tiger. Wipe the front and back of the golden finger with an eraser to remove dust, oil stain or oxide layer (as shown in figure 10).

Step 3 clean the CPU cooling fan. Unscrew the fixing screws on the fan with a small Phillips screwdriver and remove the cooling fan. Gently wipe the blades and edges of the fan with a small brush, and then blow the dust clean with a balloon. Then wipe the dust on the heat sink with a brush or a wet cloth.

Tip: Some cooling fans are integrated with CPU, so there is no way to separate the fan from the radiator. You can only brush off the dust in the fan blades and bearings with a brush, and then blow off the remaining dust with a leather tiger.

Step 4 Clean the power supply. Unscrew the screw on the power supply with a screwdriver, remove the power supply housing, remove the circuit board of the power supply part, separate the circuit board from the power supply housing, and then clean it with a leather tiger and a brush (as shown in figure 1 1). Finally, unscrew the four screws on the back of the power supply, take the fan out of the power supply housing and clean it with a brush.

Tip: If the power supply is still under warranty, it is recommended to clean the dust on the power supply surface and fan blades with a small brush. Because there is no power supply beyond the warranty period, you will lose the warranty if you disassemble it at will.

Step 5 Clean the optical drive. Unfold the paper clip and insert it into the emergency ejection hole on the front panel of the CD-ROM drive. Open the tray of the CD-ROM drive with a little force, and gently wipe everything with lens test paper. If the reading ability of the optical drive decreases, you can disassemble the optical drive, gently wipe off the dust on the lens surface with absorbent cotton or lens paper, and finally install the optical drive.

Note: Because there is a film on the lens surface, it must be wiped with a soft dry cloth when cleaning.

After all the cleaning work is completed, the next step is to restore these components. However, in order to run the computer as before, besides cleaning the computer hardware, the system must also be cleaned and maintained.

system maintenance

Usually, when you install or uninstall software or browse the web, you will leave a lot of useless files in the system. Once these junk files accumulate too much, it will not only occupy a lot of hard disk space, but also reduce system performance and even lead to conflicts between useful programs in the system, so it is very important to clean up the system.

First, remove the system garbage.

Step 1 Empty the garbage in the recycle bin. Some people think that it will be all right after deleting files. In fact, these so-called deleted file systems first save them in the recycle bin, which still takes up a lot of hard disk space. Right-click the recycle bin icon, and then press Empty Recycle Bin.

Delete temporary files. Right-click the IE shortcut, select Properties, and then click Delete Cookies, Delete Files and Delete History in the General tab to clear the temporary files left on the Internet.

Tip: After clicking the "Delete File" button, you must check "Delete All Offline Content" in the pop-up dialog box (as shown in figure 12) to ensure that online records can be completely cleared.

Step 3 Clear the file name from the document menu. Click start → settings → taskbar and start menu to open the taskbar properties dialog box (as shown in figure 13). Select the Start Menu Program tab in this dialog box, and then click the Clear button.

Step 4 Clear the program name in the run list. Run the "Regedit" command, open the Registry Editor, and then find "HKEY _ Current _ User/Software/Microsoft /Windows/ Current Version/Explorer /Runmru". The information in the "Run" drop-down list is displayed on the right side of the registry (as shown in figure 14). To delete an item, right-click the name and select Delete. Be careful not to delete the rows where Default and MRUList are located.

Step 5 clear the redundant fonts and temporary files in the system. Use the font icon program on the control panel to delete unwanted fonts. Delete all files in the Internet temporary files folder in the Windows directory to clear the temporary files. You can also right-click the Start button, select Search and enter *. Tmp "In the Name dialog box, set the drop-down list of the Search column to the whole hard disk, click Start Search, and finally delete all found tmp files.

Delete unused programs. Use Add/Remove Programs on the control panel to clean up unused applications on the hard disk (as shown in figure 15).

Note: Do not directly delete the program file directory, because many programs will write information into Windows system files and registry when they are installed. Deleting program files directly will not only improve performance, but also further disturb hard disk data.

Tip: There are some specialized system maintenance software, such as Windows Optimizer, which can delete junk files and some records in the system through simple operations, which is very suitable for friends who have just touched the computer.