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My screen disappeared and I can't get it back

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I posted this problem last week, but I may not have explained it properly. While on Firefox, the page suddenly disappeared and all I can get is a picture of the page when I mouse over the icon in the taskbar. Clicking on the picture doesn't restore the page. If I click on the icon itself, the page appears to fly off my screen and flies back when I click again, but it doesn't restore to full screen. I can't access any links or buttons because I don't have a web page at all, and I can't reset Firefox for the same reason. Is there anything I can do to fix this without actually using a web page?

Thanks to the one person who replied last week, but I can't access the page to use the links. I need a solution that doesn't involve a web page.

I posted this problem last week, but I may not have explained it properly. While on Firefox, the page suddenly disappeared and all I can get is a picture of the page when I mouse over the icon in the taskbar. Clicking on the picture doesn't restore the page. If I click on the icon itself, the page appears to fly off my screen and flies back when I click again, but it doesn't restore to full screen. I can't access any links or buttons because I don't have a web page at all, and I can't reset Firefox for the same reason. Is there anything I can do to fix this without actually using a web page? Thanks to the one person who replied last week, but I can't access the page to use the links. I need a solution that doesn't involve a web page.

選ばれた解決策

Close Firefox. Use the Windows Task Manager to make sure it is closed. Then, holding down the shift key, and try to start Firefox. Does it work now?

Clear the Cache Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

and

Remove Cookies Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"

While you are in safe mode;
Firefox Options > Advanced > General.
Look for and turn off Use Hardware Acceleration.

Start Firefox in Safe Mode

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選ばれた解決策

Close Firefox. Use the Windows Task Manager to make sure it is closed. Then, holding down the shift key, and try to start Firefox. Does it work now?

Clear the Cache Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

and

Remove Cookies Firefox/Tools > Options > Privacy > Cookies: "Show Cookies"

While you are in safe mode;
Firefox Options > Advanced > General.
Look for and turn off Use Hardware Acceleration.

Start Firefox in Safe Mode

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  • Use Restore or Maximize in the right-click context menu of the Taskbar icon to set focus to the Firefox application if you do not see the Firefox window.
  • Open the system menu of that Firefox window via Alt+Space and see if you can move and resize the window into view by using the keyboard cursor keys.

If this works then first close all other open Firefox windows and then close Firefox via "File > Exit/Quit" to save this setting.

If the above didn't help then see:

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When your Firefox window is offscreen there are some other tricks you can try in this thread: opens off monitor screen.