The computer has not been used for half a year, and now it is turned on without self check, and the

You use a soft brush to clean the dust on the motherboard, and then use a hair dryer to blow off the dust inside, remember to use cold air, and then wipe the gold finger of the memory module and the graphics card with an eraser, and clean the dust from the CPU and the graphics card and the fan of the power supply, and then turn it on, and the connection between the graphics card and the monitor should also be well connected.

You can dust it with a hair dryer at home and redo the system thing.

It is best to clean it with a painted brush.

Clean with a brush, then have to blow the hair and blow it with a cold wind. The gold finger of the memory module and graphics card is erased with an eraser.

1.First make sure your monitor is good and verify it by other methods.

2.It is normal to start without self-checking, generally only when you turn off the machine illegally, the self-test will be carried out.

3.The dust division method on the motherboard, which has been introduced by the friends above, is absolutely no problem.

4.If the hardware is completely fine, you'd better redo the system. After all, I haven't used it for half a year.,Maybe there's something wrong.,The new system.,You can use it with confidence.,Other problems can be found out!

When this happens, it can be solved with the following methods:

1. In this case, first check whether the external wiring of the computer is connected, and plug in each connection again to see if the fault is eliminated.

2. If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

3. If not, clean up the dust on the motherboard, and then check whether the computer is normal.

4. If the fault persists, unplug the reset cable on the motherboard and other switches and indicator lights, and then use the change cone short-circuit switch to see if it can be turned on.

Fault phenomenon: After powering on, the screen does not have any display, and no "dripping" sound of the motherboard speaker is heard.

Fault analysis: The internal BIOS data of the COMS chip of the motherboard is damaged by CIH virus or static electricity, etc., and cannot be read, and the system cannot complete the self-test when it starts, so it cannot be started.

Known solution: Contact the motherboard manufacturer to replace the COMS chip with a new one or find the BIOS file provided by the motherboard manufacturer and write it to the burner.

Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.

Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.

Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

Step 7: If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

Step 8: When the computer is turned on without display but there is an alarm sound, when the computer is booted up, the system BIOS starts to POST (power-on self-test), when it detects a fatal error in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound.

If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.

1. First of all, check whether the display cable is tightly connected with the display interface.

Note: Many times it is because the plug is loose and the monitor has no signal <>

2. If you make sure that there is no problem with the connection of the monitor plug! It is necessary to check whether the wiring of the monitor connector is damaged.

3. In addition to the interface of the display wiring that needs to be checked, the display interface also needs to be checked to see if it is to be derusted.

4. If there are conditions, it is best to open the side cover of the host to see if there is no line damage.

5. The memory module may also cause no signal on the display, so you need to confirm that the memory module and the slot are firm.

6. The graphics card also needs to be checked! See if it's loose.

7. After the host and various related hardware are checked, if you confirm that there is no problem with the input interface behind the display, you can basically solve the problem that the computer has no signal.

There is no signal on the computer boot display to say that there is obviously a problem with the card, it may be that the card slot has not been turned on for a long time, and the contact is poor, you can unplug the graphics card and plug it back in.

The computer is not used for a long time (one year), and the display cannot be displayed after turning it on, and the wet circuit may be broken.

The hardware may be broken, but it can be repaired, it is recommended to find a professional to come and repair, don't tinker with it, the trouble is getting bigger and bigger.

If the computer is not used for a long time, it must be turned on to kill the virus, and there is too much garbage, which cannot be dragged out, and the garbage needs to be completely removed, so that the boot will be fast.

So can you prove that your console boots up normally? Check out the major hardware! There is also a method of elimination to find other normal monitors, if the monitor is responsive, it means that there is a problem with your monitor, if it does not respond, it is a host problem.

Hello, the computer has not been used for a long time, the display screen is not lit but the host has been turned on, the method is as follows:1Check whether the cable of the display is properly connected and plug it back in.

2. Check whether the power cord is aging, damaged or in poor contact. Check the power cord of the display, the connection power cable between the monitor and the host, 3. Find the open button on the monitor, click the button, and the screen will light up. 4. You can also find the brand to talk about the after-sales maintenance of the sedan car.