Bios won't let me overclock to 4.5 ghz again (pls help)

Zels

Commendable
Dec 21, 2016
2
0
1,510
So I had my i5-2500k over locked to 4.5ghz stable for months, until I had to clear my cmos setting due to an error. I'm running the latest update from the manufacturer for my bios (Mobo is an Asrock extreme4 z77). I know this motherboard is pretty good at overclocking and I've done it before, but now my bios looks a little different from other people with the same boards. For instance, I can't change the clock speed to anything over 3.7ghz, and I also don't have the XMP file option to change my RAM from 1333mhz to 1600mhz as it should be.

Any help would be greatly appreciated!