What happens if the computer doesn t turn on for a few days?

Step 1. First of all, open the computer host to check whether there is a large amount of dust inside the case, if the computer is not used for a long time, there will be this problem, take a blower to blow the dust inside the computer clean, and then use a small brush to clean up all the parts of the computer to ensure that there is no dust in the chassis, and then start the test after cleaning, if the problem is still the same, continue to the next step.

Step two. Only keep the CPU, memory, graphics card, power supply, other parts and the jumper of the chassis and the motherboard on the computer motherboard, place the motherboard outside the case, and the bottom of the motherboard is cushioned with books and other insulating objects, and then connect the motherboard to the power supply, use a screwdriver to short the motherboard power switch jumper, if the computer is successfully turned on, it means that the other parts of the computer are not in good contact, if the fault is still there, then continue to the next step.

Step 3. The above steps are the minimum range of exclusion method, first exclude the surrounding devices, and then gradually narrow the scope of exclusion, then remove the computer memory, wipe the gold finger, on the reinstallation, if the problem is eliminated, it means that the memory is not in good contact, if the problem is still in the next step of troubleshooting.

Step 4. Next, the factor of power supply is excluded, if a part of the power supply is short-circuited due to the humidity of the external environment, or the power supply is damaged, it will lead to the failure of the computer to turn on, then you can use the replacement method, find a new power supply to install it and reboot the test, to see if the computer can be turned on smoothly, if the problem is still continuing to the next step of troubleshooting.

Step five. After all the above parts are eliminated, the last lock is the "motherboard", the motherboard as the core of the entire computer host, if there is a problem will directly lead to the computer "no power", "black screen" and other problems, first cut off the CMOS battery on the motherboard, wait for about 2 minutes to install it on the motherboard, re-discharge the computer motherboard BIOS, and then test whether the computer is successfully booted.

Hello, check whether the connection cable between the monitor and the host is loose and whether the monitor is powered on normally.

Or if the fault is caused by poor hardware contact, it is recommended to perform the following operations:

1. Turn off the power, open the case, clean up the dust, especially the dust of the CPU fan, and check whether the CPU fan is rotating normally. Plug and unplug the hard drive data cable and power cable (this is more important).

2. Power off, open the chassis, plug and unplug the memory, wipe the gold finger part with an eraser, and plug it back in (don't reverse it).

3. Plug and unplug the graphics card, wipe the gold finger part with an eraser, and reinsert it tightly (the buckle should be buckled).

4. Unplug the power cord, cut off the motherboard button battery, wait for three minutes, and then reinstall the motherboard.

5. If the above operations cannot solve the problem, it is recommended to send it to the maintenance center.

What should I do if the computer has not been used for a long time and cannot be turned on?

Dear, I'm glad to answer for you: Answer: The computer is useless for a long time, and the machine can't be turned on, you can solve the problem in this way: the system can't start at all, you can't see the power indicator light on, and you can't hear the sound of the cooling fan.

At this time, first check whether the wires are connected well, whether the power cord is loose, if not, it can be basically determined that the power supply is partially faulty. Check: whether the power cord and socket are powered, whether the motherboard power plug is connected, whether the UPS is powered normally, and then confirm whether the power supply is faulty

The power indicator is on, the fan is turning, but there is no obvious system action on the display. In this case, if the computer has been used for a long time, it may be caused by loose memory modules or too much dust, you can remove the memory module, find an eraser or a clean glasses cloth to wipe the metal contact plate under the memory module, and wipe off the dust on it to prevent the computer from being unable to boot normally due to poor contact of the memory module. The general problem can be solved by Phenomenon Three:

After booting, the monitor has no image, but the machine reads the hard disk, and judging by the sound, the machine has entered the operating system, which means that the host is normal, and the problem lies in the monitor and graphics card. Check the idea and method: check whether the connection between the monitor and the graphics card is normal, whether the connector is normal, and if possible, replace the graphics card and the display.

Phenomenon 4: After passing the self-test, but unable to enter the operating system, this phenomenon means that the boot file cannot be found, if there is no problem with the hard disk, the operating system is broken. Phenomenon 5:

After booting up, the graphics card and motherboard information are displayed, but the self-test process stops when it reaches a certain hardware, and the problem is judged according to the fault phenomenon and what changes or operations have been made to the computer recently.

Check the memory module. It is possible that the memory module will not be generated for a long time, and the socket contact is poor, so plug and unplug the memory module again after unplugging it, and then turn it on and try again.

Check the motherboard battery. First, check whether the battery on the motherboard of the computer is still charged. If there is no electricity, then you need to replace the battery.

Check the graphics card. The nature of the graphics card is the same as that of the memory module, and it may cause rust if it is not used for a long time, so after unplugging the graphics card, gently wipe off the gold finger with an eraser, and then reinstall it.

Clean up the dust. After opening the main chassis, clean up the dust.

A hair dryer can be used, but be careful to use cool breeze water.

Check the power supply. Many times, the machine can't be turned on, most likely because the power supply is loose after not using it for a long time, so it is very important to check the power supply other than the computer host.

The reason why the laptop can't be turned on after a long time can be a power issue, a dead battery, or hardware damage, etc.

Here's how to fix it:

1. Check whether it is a power supply problem.

First of all, see if the power supply is not plugged in properly or there is a problem with the plug, if you are using a battery, then plug it in and try again. You can go to a friend or find a power supply of the same model to try it. If it can be turned on, then the external power supply is damaged, if not, then there may be a hardware failure inside the laptop or the laptop boot button is out of order.

Solution: It is recommended to take it for maintenance.

2. Check whether the key components are loose.

If the computer crashes after moving, it may be that the computer is subjected to a lot of vibration during the move, causing the internal parts of the computer to loosen and come into contact with Wu Sun, causing the crash.

Solution: Open the machine and re-fasten the memory, graphics card, hard disk and other devices.

3. The laptop cannot be turned on due to hardware damage.

1) Motherboard failure: Motherboard failure is the main reason why the laptop won't turn on. It is often caused by factors such as liquid ingress of the notebook, damage, and damage to the components of the motherboard itself.

2) Circuit failure: In addition to man-made liquid inlet and short circuit, most of the faults of laptops that cannot be turned on are problems with the protection isolation circuit and the fault of the boot circuit and EC peripheral circuit, and sometimes the circuit is burned out in a large area.

3) BGA failure: BGA failure is also a fault caused by the failure of the laptop to turn on, which is extremely common in the notebook that uses DBM as the Nanqiao chip in the Swift Relaxation generation.

Solution: In the case of the above hardware damage, the laptop can only be repaired.

Laptop maintenance method:

1. Don't use up the battery completely.

In the case of frequent mobile office, it is completely OK to charge the power supply at hand for a while, and unplug it when you leave and continue to use the battery. But remember, don't run out of power all the time! "Deep discharge" will affect the internal material structure of lithium batteries and is irreversible, shortening the battery life.

2. Perform a full charge once a month.

Charge the battery fully once a month or so: from around 20% until it is fully charged. It is still necessary to let the battery play a sense of existence, and the best maintenance of the item is to use it regularly!

3. Avoid charging and using in a high-temperature environment, and pay attention to computer heat dissipation.

Room temperature (20-30) is the most suitable working temperature of the battery, and the operating environment with too high or too low temperature will reduce the service life of the battery; The best storage environment for the battery is a dry environment of 10-30 °C, if the temperature is too low, the battery activity will be reduced; If the temperature is too high, it will speed up the discharge of the battery and reduce the service life of the battery. <>