If you can't hear your computer's hard drive whirring/reading, then it's probably your computer's end that has the problem. Given that the BIOS screen doesn't even popup, it may be a problem with the BIOS which prevents you from starting up.
You can try clearing the CMOS
and hope that solves the problem.
If you don't even see the BIOS screen, you won't be able to reformat. If it were the hard drive's problem, you would see at least the BIOS screen.