What do do with my Acer Aspire when it comes on and will only show No Rebootable Device?? What does it want me to do??

[norbukyibyema]

My Acer Aspire has lost its mind. When I turned it on it said at f first there was a problem and it needed to restart. Then it said it was diagnosing the problem. Then it said it couldn't self fix it. Now the screen says No Bootable Device and I can't get away from that screen. What does it want me to do??

 

[popatim]

It sounds like your internal HDD (or SSD) has either failed or corrupted the boot files.
Press F2 after powering up to enter the built in diagnostics. If your drive passes you a windows boot disk/usb may be able to repair the OS or rescue import data.