Hi again, I have a problem. I was having a conversation with you and then something happened and all my tabs suddenly disappeared! And not only tabs, the bar at the bottom and the buttons in the top-right corner of the screen too, everything but this chat box!!!

Usually in these situations I just hold the turn off button on my computer until everything goes black and then turn it on again, but I cannot do that at the moment as pictures are moving from the usb stick to my computer and my grandson David told me to not turn off the computer while this kind of stuff is in progress, could you please help me?! Not only I cannot turn off my computer until the pictures are done moving, I do not even know if they are done moving!!! I am at a total stalemate here!!!
I'm sorry to hear that you're experiencing this issue. It sounds like your computer may have encountered a problem with the operating system or with the graphics card. However, let's try some basic troubleshooting steps to see if we can fix the issue.

First, try pressing the F11 key on your keyboard. This should exit full-screen mode and restore the tabs, bar at the bottom, and buttons in the top-right corner of your screen.

If that doesn't work, try pressing the Ctrl+Shift+T keys together. This should reopen the tabs that were previously open.

If neither of these options work, try restarting your computer by pressing and holding the power button until the computer turns off, and then turning it back on again. However, if files are currently transferring from the USB stick to your computer, it's important to wait until the transfer is complete before restarting the computer. You can check the progress of the file transfer by looking at the file transfer window.

If none of these steps work, there may be a more serious issue with your computer, and you may need to seek the help of a computer technician.