Solutions to common computer abnormalities

 

  1. The best solution to leaving traces of windows on the desktop of win7 
  2. Do you need admin rights to delete?
  3. Play video without sound:
  4. windows cannot start the windows update service (located on the local computer) Error 2: The system cannot find the file specified
  5. This dns error phenomenon
  6. What should I do if I can ping the internal and external networks of Win7 but cannot access the Internet:

 

 

The best solution to the residual traces of windows on the win7 desktop is the 
current cancellation: adjust the screen resolution and restore it to solve the existing afterimage removal.
https://jingyan.baidu.com/article/d621e8da05c91a2865913feb.html   
https://jingyan.baidu.com/article/0a52e3f4ca1978bf63ed727f.html

 

Do you need admin rights to delete?

Elevate your current account to administrator

Method: Right-click "My Computer" → select "Manage" in the options → expand in sequence in the Computer Management window

 System Tools → Local Users and Groups → Click "Groups" → There is an Administrators in the right border

The name of the group is the Administrators group → double-click "Administrators" → click Add in the lower left corner → then click Advanced →

Click the Find Now button on the right → see the account name you just created in the box below, select it and press OK → see

With your account name in the box, press OK → Finally, you must press Apply.

 

Play video without sound:

Click on My Computer-----Manage-----Device Manager-----Sound, Video and Controller-----Click on the upper icon

Uninstall ------ scan driver changes, the driver you just deleted appears ----- re-install it

The audio format is not set to the default value, right-click the small sound icon under the option to troubleshoot sound problems

 

windows cannot start the windows update service (located on the local computer) Error 2: The system cannot find the file specified

 http://blog.csdn.net/wodetiankong516/article/details/8617490

 

This kind of dns error phenomenon: wireless login sometimes requires page login verification, but when it comes out, the browser cannot access the Internet, and it is detected that the dns is wrong;

Solution: There are more options in the lower right corner of 360 Guard. After entering, find the first aid kit for network disconnection, and detect and repair it.

 

What should I do if I can ping the internal and external networks of Win7 but cannot access the Internet:
https://jingyan.baidu.com/article/d8072ac4991c2cec94cefd7c.html

 

 

 

 

 

 

 

 

 

 

 

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