You can find the answer here:
After you minimize a program, clicking the program's button on the taskbar may not restore or maximize the program. If you use the right mouse button to click the program's button on the taskbar, the Restore or Maximize command is available on the context menu for the program.
The program window may be stored in an unviewable area off the screen.
To resolve this issue, use one of the following methods:
- Click the program's button on the taskbar.
- Right-click the program's button on the taksbar, and then click Move on the menu that appears.
- Move the mouse pointer to the middle of the screen.
- Use the ARROW keys on the keyboard to move the program window to a viewable area on the screen.
- Press ENTER.
- Resize the window if necessary.
- Click Start, point to Settings, and then click Control Panel.
- Double-click Display, and then click the Settings tab.
- Under Desktop Area, move the slider to the right. If you are unable to move the slider to the right, the display is already at the highest resolution supported by your display adapter and monitor.
- Click Apply, and then click OK when you are prompted to change your display settings.
- If you are satisfied with the display resolution, click Yes when you are prompted to save the settings, and then click OK.
- Restart your computer.
- Start the program. If the program is in a viewable area on the screen, move the program window to the center of the screen.
- Quit the program, and the follow steps 1-6 to change your display settings back to your original display settings.
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows 95. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
NOTE: For information about how to edit the registry, view the Changing Keys And Values online Help topic in Registry Editor (Regedit.exe). Note that you should make a backup copy of the registry files (System.dat and User.dat) before you edit the registry.
- Use the right mouse button to click the program's button on the taskbar, and then click Close on the menu that appears. If the Close command is not available, click Maximize, and then quit the program.
- Quit all other running programs.
- Use Registry Editor to delete the Settings value from the appropriate registry key for the program you are using. For example, if you are using Microsoft Word, delete the Settings value from the following registry key:
Hkey Current User\Software\Microsoft\Word\<version>\Data
- Quit Registry Editor.
- Start the program.
If you are still experiencing problems with DSLR Remote Pro we strongly suggest getting into contact with Support at: firstname.lastname@example.org
provide as much detail about the problem and how to reproduce it as you can.
Please include in your email:
- The version of Windows you are using ( example: Windows 10)
- Product name and version (example: DSLR Remote Pro for Windows v3.5)
- The camera model
- Details of how to reproduce the problem
(Please do not send sample images as they can be too large for some email systems to cope with. Instead, send a link to the posted images if possible.)
We also suggest checking out the most up to date DSLR help guide here!