Lenovo F40 Abnormal sound after replacing the hard disk and reinstalling the system 15

The original laptop hard drive is very good, even if you change the original one, it is still not as good as the original. Not to mention you.

Changed to 7200r min, this is the core of the problem, most notebook motherboards do not fully support 500g capacity.

or 7200r min desktop hard drives, even if they do, the heat dissipation and noise problems are just as troublesome.

If it is an XP system, it is recommended to try it with a different vista.

1. If the computer can still enter normal system or safe mode, the solution is as follows:

1. You can press the "Windows logo key + R key", that is, you need to press the Windows key and the letter R at the same time, as shown in the following figure:

2. Enter "press enter" to quickly call up "service", as shown in the following figure:

3. Find the "Windows Update" service, right-click on the service and select "Stop".

4. Double-click the "This Computer" or "Computer" icon on the desktop to enter the C: Windows SoftwareDistribution directory and delete all the files in the Datastore and Download folders.

5. Find the "Windows Update" service again, right-click on the service and select "Start".

Tip: If you still get a prompt that the configuration Windows update failed and the changes are being restored, it may be that some factors are affecting the installation and configuration of Windows Update, and you can uninstall the installed third-party security software and repeat the above operation.

2. If the computer has been unable to enter the normal system and security mode, the solution is as follows (take win10 as an example):

1. Press and hold the power button to forcibly shut down when you boot into the system, repeat more than 3 times, so that the "Recovery" interface will appear directly after turning on the system again, click "View Advanced Repair Options";

2. Select an option and select "Troubleshooting";

3. Click "Advanced Options" in "Troubleshooting";

4. Click "System Restore" in the advanced options and follow the prompts to complete the system restore.

Note: If your computer has previously turned off System Restore, you will not be able to perform System Restore.

If there is sound on the earphones, the sound card is driving normally. It's a problem with the speaker, check the connection of the speaker, sound adjustment, etc.

Dear users, hello!

Hello, it is recommended that you go to the official website** to install the motherboard, power supply, and sound card driver of the machine. After that, try the following settings, right-click the volume adjustment icon in the taskbar, select **Device, double-click the speaker icon to open the properties window, under the Advanced tab, click the drop-down menu in the default format column, adjust the sound quality to the highest, and then apply to view. If that doesn't work, try changing the system version and reinstalling the machine's operating system.

If there is a problem with the sound card driver, it is recommended that you use the 360 driver master to install the sound card driver.

The next driver wizard has updated the sound card driver.

First you need to install the installed version of the system, and then install the original driver. If you still have, try the headphones to see if it's a problem with the speaker or the system.

It is recommended that you use the deep ghost version of the system to reinstall it, and the built-in driver is still relatively complete.

Lenovo notebook emits sound size judgment:

When the hard disk is reading data, if it makes a slight squeak and a slight sound, it can only be heard in a very quiet environment, then it is a normal situation.

If the sound is too loud and there is an abnormal situation, such as being able to hear it clearly, the hard disk hardware may have failed.

Solution: It is recommended to go to Lenovo after-sales service to let professional engineers test, the hard disk can be replaced free of charge during the warranty period, and it needs to be repaired for a fee outside the warranty period.

The hard disk may be very loud when writing a large amount of data, you might as well reinstall the system to try, it is best to XP, the system of win7 is too large, there are too many automatic updates, and it is always written to the hard disk. Lenovo laptops are okay, and it's unlikely that the hard drive will be broken. Also, are you sure it's the hard drive and not the sound of the fan?

Dear Lenovo users, when the computer is operating normally, the fan and hard disk will produce a certain sound, which is a normal situation. If your machine has abnormal noise problems, it is recommended that you back up the important data in your computer and contact the local service station for relevant detection and processing.

Lenovo service station information inquiry.

If your voice is so loud and there is a problem with the hard disk head, try to let the ** merchant give you a new license.

, the next universal drive test.

Hello landlord! The hysteresis phenomenon, also known as the hysteresis phenomenon or hysteresis phenomenon, refers to the state of a system (mainly the physical system), which is not only related to the input of the current system, but also has different results due to the different paths of the past input process. In other words, after a system has been operated by an input path, even if it changes back to the original state with the same input value, the state cannot return to its original state.

For example, if a piece of clay is placed on the hand, and no force is applied after pinching, the force can be regarded as the same as the previous one, but it is no longer the previous form, and different pinching methods will also get different forms. Common physical hysteresis such as: hysteresis, electrical hysteresis, elastic hysteresis, liquid-solid phase transition hysteresis, contact angle hysteresis, etc.

Change the driver version. Drive to despise the latest is the best, only the right one. If it doesn't work to reinstall the driver, it may be a problem with the sound card. In this way, it is better to only go and test it.

You can go to the driver house and change the sound card driver.

The driver has not been updated to install the driver, right?

There is no sound problem on the computer, such as no sound when the computer is turned on, and the small speaker in the taskbar is missing, which often makes the rookies at a loss and don't know what to do. In practice, everyone will encounter similar problems. I've come across it three times on my computer.

After repeated exploration, I finally found several solutions. Now I dedicate it for the reference of netizens.

First of all, the computer is silent, but sometimes the problem is more complicated, involving both hardware and software problems. Therefore, it is necessary to find out the cause first, see if the software or hardware is malfunctioning, and then prescribe the right medicine for the problem. We must not mess around for unknown reasons, because if we don't do it, the system will be paralyzed, and the trouble will be big.

1. Check whether the sound card, cable, speaker and other equipment are connected normally; Run anti-virus software for anti-virus;

2. Right-click "My Computer" -- Properties -- Hardware -- Device Manager, and open "Sound, ** and Game Controller" to see if there is any yellow in front of you? "If so, reinstall the driver for this device to solve the problem;

4. When there is no sound and no speaker, open the control panel--- Add and remove programs--- add and delete Windows components, put a check mark in front of "Accessories and Tools", click "Next", and then, shut down and restart, the system will prompt you to install new hardware, follow the prompts to install;

5. Uninstall the sound card driver, reinstall or upgrade the audio driver;

6. When the sound card driver is installed, the prompt "AC chip cannot be found" appears, it may be that the computer is poisoned, or the sound card driver has been deleted by mistake due to illegal operation, or there is an internal software conflict. The solution is to reinstall the system and drivers.

7. Simply ignore it, wait for a period of time after shutting down and then turn it back on, sometimes the sound problem will solve itself. You might as well give it a try.

If you have a problem with the sound card driver, just reinstall it once! ~~

You should be using a ghost system.

Find a safe version to reinstall.

I think it's a sound card driver issue.

Update the sound card driver to take a look.

One is a problem with your voice settings. For example, waveforms or something, you'd better look at them after they all return to their defaults. There is also a kind of car beam I estimate that your sound card is HD, and some pirated system integrated drivers can be installed, but it will affect.

It is recommended to install the sound card driver on the motherboard driver. If you don't have a drive disk, you'll have a drive wizard.,Uninstall the original sail stupid sound card driver.,Laugh again and play the driver with the new driver.。 This basically solves the problem.

That's a system version issue, the sound is changed.