Maushi, have you tried clearing CMOS and booting into bios? This will restore everything to default settings and may work unless the bios is corrupted. In that case have you tried switching to the second bios chip. You should have 2 copies and if one by chance got corrupted perhaps the 2nd copy is okay. And a 3rd thing to try is to reflash the bios. You can get the latest version modified with the newest option ROMs here:
https://1drv.ms/f/s!Amy65Cmu51iJz0X0q0KiAuq1tN45
MB : Rampage IV BE. - Bios 0801
CPU : i7 3970x @ 4500 MHz, Offset +0.030v, Regular LLC, Fixed Frequency 750, C1E Enabled, C3/C6/C7 Disabled
CPU VCCSA: Manual 1.150v, Regular LLC, Fixed Frequency 500
RAM : Corsair Vengeance @ 1866 MHz - 64GB
Disks : Raid0 2x Intel 520 480GB; 2x Seagate 2TB
GFX : EVGA GTX690
Audio : Creative X-FI Titanium HD
PSU : Corsair AX1200i
Optic BD\DVD : Lite-On Blu-Ray; Samsung DVDRW
Cooler\Case : Corsair H100i v2 2; Silverstone TJ07
OS : Win10 Pro 64