Re: Z77 Extreme4 + i5-3570k Weird problem with bootup Dr. Debug #22
AFAIK all 2* post codes relate to memory(DIMMs). I doubt ASRock would have altered this in their BIOSes.
Check that these are a factory matched pair and that the SPD programming is identical between the two sticks.
It may be necessary here to manually enter their timing parameters, advertised speed, and advertised voltage. Leaving, or resetting if the case may be, all other parameters at/to Auto or Default.
Setting a command rate for testing purposes to 2T/2N may help also. Unless the BIOS/SPD does this for you when Command Rate is at Auto/Default as a requirement of, usually, fast timings.
Mine: ASRock Z77 Extreme6, i7-3770K, 16GB Samsung MV-3V4G3D/US, SeaSonic X-750 Gold, On-die HD 4000, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
Hers: ASRock 990FX Extreme4, FX-8150, 32GB AMD/Patriot AE316G1601U2K, SeaSonic X-750 Gold, Asus HD7770-2GD5, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
Server: Gigabyte GA-990FXA-UD5, FX-4170, 32GB AMD/Patriot AE316G1601U2K, Enermax ELT500AWT, IBM ServeRAID M1015, Sapphire Ultimate HD 4670, Norco RPC-470