What should I do if I can t choose the opening method for the files in my computer?

Open Notepad.

Write. windows registry editor version

hkey_classes_root\unknown]

alwaysshowext"=""

queryclassstore"=""

hkey_classes_root\unknown\shell]

openas"

hkey_classes_root\unknown\shell\openas]

hkey_classes_root\unknown\shell\openas\command]

hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\

00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,75,00,\

6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,25,00,53,\

00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,00,5c,00,73,00,\

79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,65,00,6c,00,6c,\

00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,4f,00,70,00,65,00,6e,00,41,00,\

73,00,5f,00,52,00,75,00,6e,00,44,00,4c,00,4c,00,20,00,25,00,31,00,00,00

After saving, name it "*".reg" double-click to open the import registry.

Problem solving.

It may be poisoned, generally speaking, it is destroyed by the virus or started with it, check the virus first, and use Trojan tools to kill the virus.

Don't know what file you want to open or what your operating system is. It could be that your user permissions are not enough, or there may be a problem with your system, or it may be that there is a virus.

Summary. The main reasons and solutions are: 1. The software on the computer can not be opened, usually because of the Trojan virus, find the run in the start menu, or press the win+r key combination to open the run, and then run the search box to enter msconfig, and then click on the diagnostic startup, enter the sysedti system configurator in the run, check the widows function, you can click on my computer to check each disk one by one, right-click on the properties, check whether the file has a system error, Find the control panel from the start menu bar, then find the program, if you can uninstall the program, first uninstall the antivirus software, and then re** the new antivirus software, check and kill the Trojan virus.

The main reasons and solutions are: 1. The software on the computer can't be opened, usually because of the Trojan virus, find the sedan car in the start menu, or press the win+r key combination to open the run, and then run the search box and enter msconfig, then click on the diagnosis to start, enter the sysedti system configurator in the run, check the widows function, you can click on my electric closed brain to check each disk one by one, right-click on the properties, Check whether there is a system error in the file, find the control panel from the start menu bar, and then find the program, if you can uninstall the program, first uninstall the antivirus software, and then re** the new antivirus software, check and kill the Trojan virus.

2. It may be that the software is incompatible with the computer system, right-click the software, select "Run as administrator", or you can select "Open the location of the file", find the "application" and click to open, right-click to select "Properties", select "Compatibility", tick in the "compatibility mode", and click "OK" before shouting. 3. If none of the above methods can solve the problem, it is recommended that the user send the computer to the maintenance point for maintenance. Resistant to clearing.

This is mainly because the file is not associated with the system software by default, or the file system does not have software installed that can be opened.

Solution: 1. Open "My Computer", enter the menu "Tools" "Folder Options" "File Type", click "New" to pop up the "New Extension" dialog box, fill in "exe" in the "File Extension" box, then click "Advanced", select "Application" in the "Associated File Type" drop-down box, click "OK" to return, and finally click "Apply" to close the dialog box.

2. You can restart the computer, press F8 to select "Safe Mode of Command Prompt", and then directly enter assoc in the command promptexe=exefile or ftype exefile=%1%* and press enter.

3. Select the default association, select the file, right-click - open the way - select the application that can be opened, and check the following always select the program to open this convenience.

1 Right-click on the file and select "Open With" (this option is not available if the computer has determined how to open it).

2 Select the program you want to use to open the file, and at the bottom left, "Always open this file with the program you selected".

3 If you don't have the program you need, you can "browse" and manually select the application.

It is because the file is not associated with the system software by default, and the solution is as follows:

1. First of all, right-click on the file, and in the pop-up menu bar, click the option to open with.

2. Then, in the pop-up menu bar on the right side of the opening method, click Select Default Program.

3. Finally, click on the software you want to set the default program opening method, and check the box in front of "Always use the selected program to open this kind of file", and then click the OK button.

Does the landlord's machine have no RAR compressed package installed? Some compressed files can't find a way to open it, so it will be reminded like that, and it is recommended that the landlord check

The first is to hide the files, you need to set the display of all files in the folder options to see In addition, after following the following methods, you need to restart your computer to take effect.

1. If there are a class of hidden files under each partition, it is best to restart the computer after deleting them.

2. Re-set the opening method in the file type (take XP as an example).

Open the My Computer tool Folder Options File Type, find "Drive" or "Folder" (choose which one according to the problem you are experiencing, if it is a double-click that can't open the drive, select "Drive", and if you can't open the folder, select "Folder"). Click "Advanced" below, "New" in the "File Type" dialog box, and fill in "open" in the operation (this can be filled in at will, if there is "open" and it points to other unfamiliar ones.) The exe file may point to a Trojan, so select """) to fill in the application used to perform the operation, and OK.

Then return to the File Type window, select Open, set it as the default, and OK. Now open the partition or folder again and see if it has returned to normal?

3. Registry Law:

a. You can't double-click the opener for partitions.

Start Run Enter regedit, find [hkey classes root drive shell] to delete all under the shell, then close the registry, press keyboard f5 to refresh, double-click the partition and look again.

b. You can't double-click on the opener for folders.

Start Run Enter regedit, find [hkey classes root directory shell] to delete all under the shell, then close the registry, press keyboard f5 to refresh, double-click the partition and look again.

Take drive D as an example.

Solution: There is a problem with this file, delete the attribute after removing it, and then find the file pointed to in the registry, and delete the shell subkey after finding it, and then you can open the D drive. Start – Run the input"regedit"(Registry) with"ctrl+f"Key.

The Find dialog box for input appears""You can see the shell child.

Then right-click - Delete.