Why does the computer screen appear like a wave layer by layer when scrolling up and down?

If the graphics card driver is damaged, it is recommended to install the graphics card driver with the random driver or ** driver wizard, or repair the system (or the installed graphics card driver is not suitable).

1. Press F8 to get the advanced option out of the power and press it to let go, and select "The latest correct configuration" to press enter to repair (this method can restore the original driver).

2. If it is a failure caused by updating the driver, right-click on my computer to select properties, select Device Manager to find this driver right-click properties Driver options above Select the return driver option below and press OK.

3. If the fault persists, it is recommended to reinstall the operating system.

Use the system that comes with the system restore method:

System Restore that comes with the system: "Start" "Programs" "Accessories" "System Tools" "System Restore", click "Restore my computer to an earlier time", press Next, you will see that the date page has a dark date, that is the restore point, after you select, click Next to restore (win7 restore the system, right-click on the computer to select attributes, select system protection on the right side, system restore, follow the steps to do it, you can also choose the bottom of this page to create, create your own restore point).

There is a problem with the graphics card driver or it is not installed.

** Driver wizard or driver life can be installed automatically F3: Press F3 on the explorer or desktop, and the "Search Files" window will appear, so if you want to search for files in a folder, then press the F3 key directly to quickly open the search window, and the search scope has been set to the folder by default. Similarly, press it in Windows Media Player and a window that says "Add to Library by Searching for Your Computer" will appear.

It's irrelevant, you right-click on my computer - Management - Device Manager to see if there is an exclamation mark.

It may be caused by damage to the graphics card driver, it is recommended to install the graphics card driver with the random driver installation or ** driver wizard, or repair the system (or the graphics card driver that has been installed is not suitable).

1. Press F8 to get the advanced option out of the power and press it to let go, and select "The latest correct configuration" to press enter to repair (this method can restore the original driver).

2. If it is a failure caused by updating the driver, right-click on my computer to select properties, select the device manager to find the right-click properties of the driver above Select the driver options below and press OK.

3. If the fault persists, it is recommended to reinstall the operating system.

Use the system that comes with the system restore method:

System Restore that comes with the system: "Start" "Programs" "Accessories" "System Tools" "System Restore", click "Restore my computer to an earlier time", press Next, you will see that the date page has a dark date, that is the restore point, after you select, click Next Restore (win7 restore the system, right-click on the computer to select attributes, stare at the right side to select system protection, the system shouts to restore, follow the steps to do it, you can also choose the bottom of this page to create beforehand, Create your own restore point).

1. The graphics card driver is not installed.

Second, the display or data cable is faulty.

Replace the monitor or cable to resolve the issue.

3. Graphics card failure.

If you have a discrete graphics card with an integrated graphics card, open the case, remove the discrete graphics card, and plug the monitor cable into the display jack corresponding to the bezel on the back of the computer.

If you don't have a discrete graphics card or an integrated graphics card, replace the discrete graphics card or plug in a discrete graphics card. Stove lead lift.

Fourth, system failure.

Reinstall the system to fix the problem.

If you are unable to determine the cause of the problem, please send the computer to a computer repair shop for professional repair.

It's because I pressed the scroll lock key by mistake, and it's okay to press it again.

Introduction to the Scroll Lock key: The Scroll Lock key is also called the scroll lock key. The Scroll Lock key first appeared on the 83 keyboard of IBM's PC XT model and the 84 keyboard of the AT connected to the Blind Grinding Search.

When scroll lock is turned off, when you use page turn keys (such as page up and page down), the selected area of the cell will move accordingly.

Introduction to common function keys:

F1 Help.

f2 renamed.

F4 displays a list of Address bars in My Computer and Windows Explorer.

f5 refresh.

f6 cycles through screen elements on a window or desktop.

F7 DOS for special tour groups with grinding calendar function.

F8 Windows Boot Options.

F9 Excel.

f10 Activate the menu bar (when available).

f11 toggles full screen.

F12 Word.