When the computer is turned on, you need to press the power button for 20 seconds before you can sta

1. It is possible that your power supply is insufficient.

2. The reason for this problem is likely to have a lot to do with the shoddy manufacturing of the current computer chassis, which is basically very low in the thickness of the steel plate (some are not steel plates at all), the frame structure, the switch elements, and the components used in the interface in order to save costs. Because the switch circuit of the south bridge of the computer motherboard actually uses the principle of micro switch to maintain the level, it is the reason why the switch of the computer case you see can actually be powered on and turned on immediately as long as you touch it lightly (it does not need to be pressed at all, and it is impossible to press). However, the quality of this kind of micro switch is not up to par, resulting in the metal shrapnel (very thin, and the gap is also short) in the room temperature thermal expansion and contraction of the "action", resulting in a decrease in toughness, often directly manifested in the phenomenon is that after pressing, the internal metal shrapnel often due to the cold inertia can not quickly bounce up and return to the position, resulting in always contact together, at this time Nanqiao believes that the level on the switch circuit is always maintained at a high level (just like if you press the chassis reset switch has not been sent, The computer will not self-test again), as a matter of course, it will not turn on.

After pressing it a few more times, the shrapnel will slowly regain its elastic ...... due to external pressure

Fix the key switches! It's best to be able to replace the switch!

If you can't repair it, and you can't buy a switch of the same model, go for a different case!

There are a lot of cases now, and the 100-300 yuan chassis in the computer city can be chosen according to your hobbies!

It's the power button on your case that's wrong.

3All If the laptop does not turn on until 30 seconds after pressing the power button, the possible reasons are as follows:

There was a problem with the BIOS system itself, but the problem was self-healing.

You can try loading the default BIOS configuration.

There is a problem with the critical hardware.

If there is a fault in the necessary resources required by the BIOS (e.g., CPU, memory), etc., such as poor contact, it may wait until the contact resistance changes after the temperature rises.

You can try to remove the memory and wipe the gold finger with an eraser before putting it back in.

Problems with the power supply or the motherboard itself.

After pressing the power button, the power supply is not enough or the power supply system is not established normally, resulting in a delay in powering on for too long.

This phenomenon may also be caused by damage to key components in the boot circuit in the motherboard.

For this kind of problem, you can only go to the repair point or after-sales department for maintenance. The average user does not have the ability to perform manual repairs on this issue.

Possible causes and solutions for pressing the computer boot button several times to turn on the computer:

1. The computer boot button switch is not in good contact. This situation is the most common, because the contact point of the switch button is small, the use time is long, dirty, and the contact is oxidized, and the contact point of the switch cannot be closed. The only solution is to replace the switch.

2. There is poor contact between the switch wire and the computer motherboard. One is that the switch is often pressed and soldered to the solder joint wire of the switch is desoldered, and the other is that the power cord is dirty or caused by oxidation between the power cord and the power pin of the motherboard. Solution: Repair welding or clean up the oxide layer.

3. The position of the button on the computer boot switch and the power switch of the chassis is not appropriate, or it is misplaced. Check whether the panel is deformed or misaligned, if it is not easy to solve, you can replace the computer restart switch and power switch.

The slow boot speed of the computer teaches you a trick to solve, and it is not a dream to boot up in 10 seconds.

The computer has been used for a long time, and the boot speed is getting slower and slower. Ah Jun teaches you a trick to turn off unnecessary startup items at boot and make the computer several times faster.

Reinstall the system and take a look.

That's not slow, is it? Is it solid?

The system crashed, try the safe mode and enter the system, and if you can't get in, you can redo it.

If the power supply voltage does not reach your configuration, it is recommended to try a different power supply.

The computer can't turn on, in this case, you can try the following methods to solve it:

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.

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, then unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the short-circuit switch to see if it can be turned on.

Take out the BIOS battery and try it back on.

1.Check whether the power supply is sufficient, and the power will be automatically powered off if the power is insufficient.

Whether the pins are in poor contact (dust removal with a brush) and whether the temperature is too high. If there is a problem with the CPU, it will also automatically protect the shutdown.

3.Whether the motherboard BIOS is set to overclock (including memory overclocking and CPU overclocking), the frequency is too high and it will crash (restore the BIOS to the default value).

4.Whether the system automatically executes the shutdown command (virus) when it is turned on (if it automatically shuts down after unplugging the hard disk, it is not a problem with the hard disk and the system).

5.If there is a problem with the memory module, an alarm or restart will be given if there is a memory error. Wipe the contact points of the memory module or replace it to see if it returns to normal.

6.This is the most common, the motherboard capacitor burned. Capacitors can be seen expanding or bursting. Burned out motherboard capacitors will cause the computer to fail to boot or reboot unsteadily.

It has nothing to do with time, it's generally poor contact.

If you have a problem with the power switch button, you can take a look at the connection cable of the motherboard.

There are at least two possibilities, one is that it occurs during the rainy season. When the machine is damp, a small short circuit keeps occurring when it is turned on, and it resumes normal start when the heat generated during the short circuit and start-up drives away the moisture in the case.

Second, it is possible that the fan is not good or malfunctioning, you can remove it to see if there is too much ash and needs to be cleaned and refueled. If the fan is not good, the temperature in the chassis will rise rapidly, the hardware will not start properly, and the machine will keep self-protecting and power off. Until the fan returns to normal, the residual heat can be removed and the fan can start normally.