Thinkpad e420 After changing to win7 ultimate, some hotkeys can be used, but some cannot

May I ask which model of yours is E420?,E420 is generally installed with a pre-installed genuine system,There is a Q disk in the computer above the computer,It is the backup of the system,So you don't need to back it up at all,As long as the Q disk is not destroyed,When you boot up,Press F11,Press the above prompts,You can restore to the previous home version。 Actually,There's no need to upgrade the computer to the flagship version.,You can't use more functions in it at all.,The computer is enough.,There's no need to chase the best system.,I'm using the home version.,I have my own key.,But I haven't upgraded.,You can enter the key in the windows anytime upgrade in the control panel to upgrade,Computer,Just use it.,The flagship version of the home version is the same! Hope it helps!

The E420 should still be within a year! If it is within one year, you can go to the repair center and restore it to the appearance setting for free! Please back up your data first!

That should be a problem with the driver.,Find the next hotkey driver of the corresponding model on the official website of Lenovo and install it。

Is it that you installed it wrong?,I'll just install it.,It's a win7 flagship.。

You can try reinstalling the hotkey driver of your machine and see if that solves the problem.

Dear Lenovo users, hello! For this question of yours, you can refer to the Lenovo Technology Forum, which has the most complete technical questions, and there are professionals in the forum to answer your questions, and you can also communicate your questions with them. For more questions, you can consult the IDEA forum.

Forum Lenovo Community.

After running, it will automatically detect the current computer model, system information, and driver information that needs to be updated and installed.

After clicking on the one-click solution, the software will automatically update all the drivers that need to be updated, after the installation is completed, the system will automatically prompt you to restart the computer, and after the restart is completed, all the drivers on the computer will be updated.

1. Go to the official website to update the driver of the hotkey shortcut.

2. Don't turn off the startup project of these hotkeys in the boot start project.

There's a camera enabled protection to see if it's locked.

XP doesn't have dual graphics card drivers.,A friend of mine studied it.,He originally wanted to change XP.,Because of this.,So I didn't change it.,He's Acer 4745G.

That's it. It can only be used when the win7 system is used.

Do you see if you have set the mode of the hard drive incorrectly in the CMOS?

ghos must be set to compatibility mode to proceed;

After the ghost is completed, it should be set to ahcd mode;

Look.

It is recommended to try starting the machine with PE and then ghosting it under PE

You can definitely do it with a recovery disk, really, I've done that.

Hello. Mine is also an e420How do you adjust the brightness?

Do you use shortcut keys? For this, you need to go to the official website to install the model of your machine and install the hotkey driver. Just restart the machine.

This hotkey is driven. That's what we call shortcuts. And be sure to use it after installation.

Don't let 360 and the rest of you disable it. Give it a try.

Dear Lenovo users, hello!

For the situation you described, you need to perform some operations to determine whether the cause of the current phenomenon is caused by the driver or hardware identification problem.

Click Start - All Programs - Accessories - Entertainment - Audio Recorder, after opening, try to use the audio recorder that comes with the system first, click Start Recording, whether the microphone can be called normally for recording.

If it can be called, it means that the problem is in the invoking software, and on the one hand, you can enter the invoking software for debugging. On the other hand, this software can be uninstalled and reinstalled observed. If the audio recorder is invalid, on the one hand, it may be caused by a problem with the sound card driver, and on the other hand, it may be caused by an abnormal system setting in your installation.

At the same time, hardware possibilities are not ruled out.

It is recommended to contact the service station to check if the replacement system is invalid

You can check the service station through the following link, and the working hours are Monday to Friday (some service stations will be marked on Saturday and Sunday).

That's because you have more than one .net component,,, you can install this component and install the sound card driver again. Attached address.

Domestic products don't seem to support upgrading 64-bit systems.