When I press f2 or f3 in mc nothing happends? I Amon a hp omni 200 pc with a Microsoft wireless keyboard 3000 Thanks
Go to the start menu and type %appdata% Click on your ".minecraft" folder. Click on "Screenshots" Your screenshots should be saved there.
Some people use "Shift-F2". Try that. Thread has also been moved. Moved. General ---> Help & Support/Errors & Bugs
Try re-installing Minecraft. Start Minecraft.exe, then click on "Options" and click "Force Update". This will re-install your Minecraft folder and remove all your mods.
Nothing will be deleted that is related to your worlds or server. But to be on the safe side, I recommend making a backup file.