ah, I see ...
said the blind man
'Tis a little strange, you should be able to 'boot' into the BIOS, unless the HD is faulty or incorrectly installed.
Gawd knows what Dell do to these CD/DVDs but you should not have "borrowed" the DVD ... unless you have the exact same PC. Even then, you are breaking MS law.
On re-reading I see you reset the CMOS/BIOS ... did you recheck that the BIOS is now set correctly for your devices, HD/CDs etc: ?
Can you give me the exact Asscrock MB you have ... helps if you have the manual.