Kneel down and beg the computer master The laptop power supply is broken

Try the battery correction function in the notebook BIOS, many brands of laptops have integrated battery correction programs in their BIOS, and you can complete the battery correction operation directly into the BIOS.

1. Turn on the computer, press F2 to enter the BIOS menu after the boot screen appears; Through the left and right arrow keys, select to enter the power menu.

2. Enter the power menu, you can see the "Start Battery Calibration" option, select it and press the enter key to execute.

3. At this time, the screen will turn blue, and there will be an English prompt to plug in the power adapter of the notebook to charge the battery. When the battery is fully charged, the screen prompts the user to disconnect the power adapter. After that, the laptop starts to continuously discharge the battery until the battery is depleted.

4. This process takes a while, wait for the battery to run out and automatically shut down, then connect the power adapter to charge the battery, but do not turn it on. The battery calibration process is not completed until the charging is complete (the charging indicator is off).

Lenovo's notebooks used to have a battery issue phase.

After the automatic shutdown, it may cause system failure, which may cause the battery not to charge, and it is necessary to reactivate the battery of the notebook and then use it, if not, you can find a repair computer.

You plug in the external power supply first, charge it for a few hours before turning on the computer to try, I've encountered this situation before, that's how it was done, it is estimated that your battery has been used empty, so it will be like this!

There is a problem with your battery. You choose the balance one, because if it is high-performance, the loss of the battery is very large, and you don't have to give up the electricity you get, and if you can't meet the requirements, this situation will occur, so you better not play it, let the battery be fully charged first.

If the power supply is burned, it is generally replaced directly, because the cost of repairing the power supply is too high.

1. Power introduction: computer power supply is a device that converts 220V alternating current into direct current, and is specially designed for computer accessories such as CPU, motherboard, hard disk, memory module, graphics card, optical disk drive, etc., which is the hub of power supply for various components of the computer and an important part of the computer. One of the problems that can be difficult to find in a PC is the lack of power, the symptoms can be the motherboard "not working", the software causing frequent system crashes, these symptoms can be manifested by abnormalities in the motherboard, CPU or memory, and even sometimes it seems to be a problem with the hard disk, CDROM, floppy disk, etc.

Imagine this: every component in a PC system has the same power--- that is the power supply. The power supply must provide a stable, continuous current to all devices without interruption.

If the power supply is too high or insufficient, the connected device may not function properly and appear to be broken.

2. How to choose a computer power supply: Generally speaking, add up the full-load power consumption of each accessory in the host, and then this maximum value is lower than the rated power of the power supply, and the power of the power supply should be set aside more, so that it is OK. In addition, the display is independently powered and has nothing to do with the host power supply, so don't count the display when calculating power consumption.

More professionally, it depends on whether the 12V output power of the power supply is sufficient. 12V is to power the CPU and graphics card, the latter two are the two most power-consuming accessories in the host, they account for the vast majority of the host's full load power consumption, so as long as the 12V output power of the power supply can drive the CPU and graphics card, it is almost the same. Since the 12V output power of the power supply is lower than the rated power, it is not very safe to count the rated power, which is why I said above that the rated power should be set aside a little more.

Laptop power damage is a very common problem, and it can be caused by a variety of reasons. Here are the possible reasons for laptop power damage:

1.Power problems such as overvoltage, overcurrent, short circuit, etc.: These are the most common causes of laptop power damage. If the power supply voltage is unstable, the current is too high, or there is a short circuit, the power supply can be damaged.

2.Overuse: With too frequent use, laptop power supplies can become more and more susceptible to damage. Prolonged use will also accelerate the aging of the power supply, leading to damage.

3.Static electricity: Static electricity can damage the power supply, so when using a laptop, you need to use it with caution if the surrounding air is dry or if there is too much static electricity in the pure fingers.

4.Vibration or dropping: If the laptop is accidentally dropped to the ground or subjected to vibrations, damage to the power supply is also possible.

5.**Quotient Problem: Some cheap power supplies come from unreliable **Merchants, and Confession Pants Town may cause damage to the power supply.

6.If the power supply is not used for a long time, the internal circuitry may be damaged by time, and there may also be problems such as corrosion, resulting in damage to the power supply.

The above are the common reasons that can lead to laptop power damage. In order to avoid these problems, and prolong the life of the power supply, we need to carefully protect the laptop power supply to ensure that it can work properly.

There can be a variety of reasons why your computer's power supply may be broken, including:

1.Overload: If the current of the power supply** exceeds its tolerance range, it will cause damage to the power supply.

2.Overheating: The components inside the power supply will generate heat when running for a long time, and if the heat dissipation is poor, it will cause the power supply to overheat and be damaged.

3.Unstable voltage: If the voltage of the power supply** is unstable, it will cause damage to the components inside the power supply.

4.Power supply aging: The power supply has been used for a long time, and the internal components are aging, which will also lead to power supply damage.

Workaround:1Replace the power supply: If the power supply has been damaged, you will need to replace it with a new one.

2.Check the power line: Check the power line for problems such as short circuit or poor contact, and if there is a problem that needs to be repaired.

3.Clean the radiator: If the power supply is overheated and damaged, you can clean the power supply radiator to improve the heat dissipation effect.

4.Use a regulated power supply: If the voltage is unstable and causes damage, a regulated power supply can be used to ensure that the voltage is stable.

5.Regular maintenance: Regularly clean the inside of the power supply and replace aging components to prolong the life of the power supply.

1.See if the power supply is burned.

2.Use a multimeter to measure whether the power supply connector of the power supply is powered or not, and what is the voltage.

In most cases, when people encounter damage to computer hardware, they simply replace it. It can range from a few tens of dollars to a few hundred yuan. After all, there are very few people who know how to repair hardware, and the various components and circuits are even more dazzling.

But sometimes, with a little bit of care, we can become "maintenance masters". And with less investment, the benefits are greater! Let's take a look at how I spent a dollar to save the power supply.

Example 1. My friend's computer stopped working after a thunderstorm, the monitor and the host could not be powered on, and the power supply was confirmed to be damaged by the replacement method, and it took 70 yuan to replace the new power supply. With the consent of the user, I tried to disassemble the power supply, and found that the power fuse was black, and I thought that the fuse was damaged, and I spent one yuan to buy a fuse and replace it, and everything was normal!

Experience. There is a fuse inside the power supply that can blow to protect itself in the event of overpressure, in which case the fuse (Fig. 1) can be removed from the DAN spring frame and replaced with a new one. The process only requires a screwdriver, and there is no technical content in the operation, so it is very simple.

Example 2. A computer in this unit stopped working, and the professional maintenance personnel of the unit determined that the power supply was damaged, and after replacing the new power supply, the power supply of the damaged orange mold roll was left to us. I tried to disassemble the power supply for repairs, and during the inspection, I found that the upper cover of one capacitor was bulging, so I removed the capacitor with an electric soldering iron, and purchased a 16V, 3300 F capacitor according to the model (Figure 2), which cost 1 yuan.

After soldering the new capacitor, everything is fine for testing.

Experience. 1.The capacitor is a relatively fragile part of the hardware, and there are many phenomena that the hardware cannot work due to capacitor damage, and it is relatively easy to identify the capacitor damage from the appearance

Drum covers, bubbling and popping are very intuitive, as long as you buy and replace them by model. The tools needed are also very simple, a screwdriver, which is used to open the power supply case and disassemble the circuit board; A soldering iron and a section of solder wire are used to remove and solder capacitors. Only simple welding techniques are required and no professional training is required.

2.As long as the warranty period is exceeded, the computer repair company will generally not repair the hardware when it is damaged, and will only sell you a new one and install it for you. Although there is a certain risk in do-it-yourself maintenance, there is still a glimmer of hope, and it doesn't matter if it is not repaired, it must be replaced with a new one anyway.

So, don't worry, especially with this simple and easy repair.