A friend from Longgang, Shenzhen said that the Acer 4741 notebook he was using always shut off the power automatically. Sometimes it would cut off the power when touched. It often could not be turned on. Even when the adapter was plugged in, the power indicator light did not ligh

A friend from Longgang, Shenzhen said that the Acer 4741 notebook he was using always shut off the power automatically. Sometimes it would shut down when touched. It often could not be turned on. Even if the adapter was plugged in, the power indicator light would not light up. He asked me to help repair it. Analysis of

repair

generally involves three aspects of problem

The adapter interface is crooked, but the adapter output voltage measured with a multimeter is normal.

decided to check the adapter and power interface first, so he ordered the adapter and power interface.

After receiving the adapter and power interface, he tore the notebook into pieces and replaced the power interface.

After changing the power interface, it was completely normal to use the new adapter to test repeated plugging and unplugging, and repeated turning on and off. Then I tested it with the old adapter, and the problem remained. It is determined that the power adapter is damaged.

Upgrade to speed up

A friend's laptop has been upgraded from 4G memory to 6G many years ago, but it only has a 320G mechanical hard drive , and no solid state drive .

I suggested that he upgrade the solid state drive to speed up the computer. This notebook has an optical drive, and the upgrade plan proposed to him was to 1) directly replace the current mechanical hard drive with a solid-state drive; 2) install a solid-state drive from the optical drive. Since my friend’s original hard drive contained a lot of data, I decided to install a solid-state drive from the optical drive. So it matches the optical drive and the hard disk bay .

After getting the appropriate optical drive bay and solid state drive, he started to install them. By default, the mechanical hard drive remains in the original hard drive position, and the solid-state drive is installed from the optical drive bay.

But here comes the problem. After installation, I turned on the computer and pressed F2 to enter the BIOS to see if it was detected normally, but the boot stuck and I could not enter.

So I changed the positions of the solid state drive and the mechanical hard drive. The solid state drive was installed in the original hard drive position, and the mechanical hard drive was installed in the optical drive bay, but the problem remained.

I was thinking about whether there was a problem with the optical drive bay, so I replaced another bay, but the problem remained the same.

It is normal to install a mechanical hard drive and a solid-state drive separately in the original hard disk position. Installing a hard disk in the optical drive position will not work. It does not matter whether the hard disk mode in the BIOS is AHCI or IDE. The original optical drive is used normally.

Installing the new optical drive bay into another HP computer works fine.

found that many netizens have successfully upgraded, so they decided to update the BIOS. The current BIOS version is 1.04.

The last version of Acer's official website is V1.31

After downloading it, I saw that there is winflash software. The description file supports x86 and x64

. Then I ran winflash directly in the current Windows 7 64-bit system and updated it. Unexpectedly, it prompted Wflash64 Error, " Flash Bios Fail (0x4D0)"

Then enter the update below DOS. First, it prompts "DC does not exist"

Because the battery has long been used up, I didn't plug it in. I didn't expect that it wouldn't work without the battery. After plugging in the used battery, it prompted "DC Percentage is 0%. It should be over 30%".

was depressed. Forget about the error when running under Windows. Under DOS, the battery power needs to be greater than 30%. So I tried downloading all other versions from the official website. Winflash all prompted the same error, some DOSFLASH prompts also had the same error, and some were directly stuck, and even forced shutdown did not work.

Called Acer customer service, but no technical support plan was provided. Please contact the after-sales service station; call Acer after-sales service station and asked to send it for inspection. If it is not repaired after inspection, a 100 inspection fee will be charged, and no technical support plan is provided.The computer shell of

says 4741G, and the customer query also shows 4741G, but the official software test shows 4741.

later reinstalled win7 32-bit system, winflash can run normally, but it also prompts that the battery needs to be greater than 30%.

had no choice, so he ordered another battery.

After testing, the new battery can be used for about 2 hours with only Kugou Music turned on and the screen always on.

finally successfully updated the BIOS through winflash in the Windows 7 system and updated it to version V1.31.

installed the original hard drive and the optical drive hard drive at the same time, and the dual hard drive was detected normally.

But a new problem appeared again. After installing on the solid-state hard drive, it could not start in the optical drive position, so I had to install the solid-state hard drive in the original mechanical hard drive position.

Then GHOST backed up the original mechanical hard drive system in PE, and then cloned the original system to the solid state drive through the GHOST-partition-to partition function.

uses this partition-to-partition cloning method. Be sure to choose the order of partitions correctly, otherwise it will be self-defeating and the original mechanical hard disk system will be lost.

After the operation is completed, the original mechanical hard disk C drive is hidden and kept for future use. Because my friend originally installed some software on the D drive, and the solid state drive was divided into 2 partitions, the first partition defaulted to the C drive, and the second partition defaulted to the D drive. As a result, the original software could not be opened and used normally, so I changed all partitions again. The drive letter is . The DEF partition drive letter of the original mechanical hard drive remains unchanged, and the second partition of the solid state drive is changed to G drive. After upgrading the solid-state drive, the speed has been significantly improved. In the words of other peers, it is "flying fast."

improves heat dissipation

During the maintenance process, it was discovered that the notebook was seriously hot, the CPU and graphics card were very hot, and it would automatically shut down.

So I cleaned it and replaced the silicone grease.

But it has no effect. The fan spins very fast, but I don’t feel any wind coming out of the outside of the notebook. So I completely dismantled the fan. Oh my God, it was so dirty inside that the air outlet was completely blocked. After cleaning it again, wiping off the silicone grease and using liquid metal, it was finally cool.