try mo po punta sa BIOS tapos reset to default mo,
o salpak ka po ng bootable device, sa flash drive or dvd...
How to Change Your Computer's Boot Order
Step 1: Enter your Computer's BIOS set up utility. To enter BIOS, you often need to press a key (or sometimes a combination of keys) on your keyboard just as your computer is starting up. ...
Step 2: Navigate to the boot order menu in BIOS. ...
Step 3: Change the Boot Order. ...
Step 4: Save your Changes.
tapos iboot mo na sa usb, then windows repair po ata, sorry di accurate, yt mo nalang po