My computer turned on and shut down within seconds

There could be a few reasons for this:

1. The power supply of the host is faulty, due to the leakage of the filter capacitor, the poor performance of the transistor, the poor performance of the modulation pulse width IC, and the sudden power failure caused by the performance degradation of the main drive transformer, and there is no voltage output, which causes the host to stop running. Solution: Replace the power supply with a new one.

2. The CPU cannot be cooled down due to the CPU fan being stuck or damaged, resulting in too high a temperature, and the motherboard starts the self-protection circuit and cuts off the power supply, so the host stops running. Solution: Clean the dust on the CPU fan, and replace it with a new fan if it is damaged.

3. The power supply is bad, or new hardware is added, and the power supply is insufficient. If the computer has a discrete graphics card, the power supply is not enough, then you can only change to a higher power power supply, the power supply has been used for a long time, and it is unstable, then you have to change the power supply to test.

4. The graphics card or graphics card fan is broken. Touch the south bridge, north bridge chip, and graphics card chip of the motherboard with your hands, if it is very hot, it is likely to be broken and needs to be repaired.

There are a number of possible reasons why your computer will automatically shut down within seconds of booting up, but here are some of the common factors that can cause the issue:

1: Power problem: Insufficient power supply or power failure of the computer may cause the computer to shut down automatically immediately after starting.

2: CPU cooler failure: If the CPU cooler fails, the CPU temperature is too high and may cause the computer to shut down automatically immediately after startup.

3: Memory problems: If there is a problem with the computer's memory, such as falling off, damaged, etc., it may also cause the computer to shut down automatically immediately after the brain starts.

4: Hardware conflict: If there is a hardware conflict, such as the motherboard, graphics card, etc., it may also cause the computer to shut down automatically immediately after starting.

Here are some possible solutions to the above problems:

1: Check the power supply: You can replace a suitable power supply, if it still can't solve the problem, you may need to replace the power supply.

2: Check the state travel radiator: You can turn on the computer host to check whether the CPU radiator is blocked by foreign objects and whether the fan is working normally. If a radiator failure is found, the radiator needs to be replaced or reinstalled.

3: Check the memory: You can reinsert the memory module or replace it with a new one.

4: Check for hardware conflicts: You can remove the hardware plugged into the motherboard and plug it back in to make sure the connection is tight.

If the above methods do not solve the problem, it is recommended to consult professional technical support or maintenance personnel.

Here's how to check it:

It will automatically shut down after less than two seconds of powering on, and generally speaking, there are only two possibilities:

1。Power supply problems, may be your power supply quality is not good, the power is not enough caused by the problem, it is recommended to replace the power supply to give it a try. If it can be solved, it is caused by poor power quality.

2。Motherboard problem, your motherboard may have been broken, open the box to see if there is any capacitor pulp, especially check the power supply nearby. If you can, find a motherboard to replace it. See if your accessory turns on properly when plugged into someone else's motherboard.

In your case, it's usually a problem with the motherboard or power supply.

Does this problem come up repeatedly?

1. Check the power plug and the plug in the main unit.

2Wipe the lower memory module and replace the lower memory module or slot.

3. Redo the system.