Windows 7: Can't change the resolution of the desktop background image

General method: Kill the virus and disable all startup items. After the first attempt is invalid, do the following. Method 1: Start typing easy access to the center of the search box, and press Enter;

Pull the slider to & ldquo; & rdquo ;. browse all settings Click “ Make your computer easier to view 

Look at the bottom of the window to make the content displayed on the screen easier to see>part<;delete the background image (if any)” If there is checked whether, clear the check;?

check the wallpaper can be changed.

Method 2: If the Windows7 desktop background is locked, you will not be able to change the background of the desktop. Just configure the "Block changes desktop background" and "Desktop wallpaper" in Group Policy. For “not configured” Group Policy & ldquo; Prevent changing desktop background & rdquo; to & ldquo; Not Configured & rdquo ;;

Group Policy & ldquo; desktop wallpaper & rdquo; to & ldquo; Not Configured & rdquo;;

If the system version does not support the Group Policy Editor, you can try to modify it directly from the registry, as follows: Use the key combination <;Win+R” call up the run command box. Type regedit.exe and press Enter to open the Registry Editor. (If the user account control window pops up, please allow to continue) Tip: Modifying the registry is risky, please be cautious.

then navigate to the following key: HKEY_LOCAL_MACHINE \\ Software \\ Microsoft \\ Windows \\ CurrentVersion \\ Policies ActiveDesktop found items. (If not, right-click & ldquo; Policies & rdquo ;, select & ldquo; New - & gt; & rdquo ;, entry named ActiveDesktop)

Click to expand ActiveDesktop, on the right side details window right mouse button, select & ldquo; new - & gt; DWORD value & rdquo ;, named NoChangingWallPaper;

NoChangingWallPaper value for the new assignment. 1 means to prevent changes, 0 means to allow changes. Here, it is assigned to 0;

Click the & ldquo; OK & rdquo; save your changes and exit the Registry Editor. Restart the computer, can the wallpaper be changed now? Method 3: If you still can't, then look at the TranscodedWallpaper.jpg file, maybe it is a problem. Enter the following address in the address bar and press Enter. %USERPROFILE%\\AppData\\Roaming\\Microsoft\\Windows\\Themes Rename TranscodedWallpaper.jpg to TranscodedWallpaper.old. (If the file suffix name is not visible, click “Alt+T” bring up the toolbar, open the “Tools->Folder Options”, uncheck the “ on the “View” tab to hide known file extension & rdquo ;.)

following prompt appears, skip, point & ldquo; is & rdquo ;;

and then double-click to open the slideshow .ini, empty all contents of the file;

quit Explorer. Restart the machine, check it out, is the problem solved? If it still can't be solved, all the options about the background settings have been changed, only the system problems can be considered