My monitor, every time I try to turn it on says this "reboot and select proper boot device or insert boot media in a selected boot device and press a key" I've already tried to press all the keys to enter BIOS but since before this problem happened I enabled ultra-fast boot so it doesn't give me time to press any of them and I don't know what to do I've seen so many videos and I just can't find any that could possibly help me

*write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard).