Missing operating system? Desktop Fix / Solution

I though i had to get some real help, but you solved my problem within half a minute. Thanks, but why do flash drives cause this issue?

it's not a solution. I cant setup windows with usb because of this problem

I almost died seeing the error

Sir this is the scenario, I'm just cleaning my computer files or deleting some folder using Command Prompt then 2 days after that, when I open my PC it says that missing operating system. So now, what can I do to fix this problem. Thanks in advance.

Thanks a lot…. It worked perfectly

Thank you! Alright👊👊👊

wtf? really

Your solutions worked like a charm. Thanks..

Thank you sooo much T_T ..

Thank you!