You should run Memtest after changing your timings. OCing memory takes time and you need to lower your timings 1 step at a time if your current settings are 9-9-9-24-2T then set them to 8-9-9-24-2T and run memory test if that does not work then try 8-9-9-26-2T. You will need to have some patients when OCing memory to get the most out of your rig.
Grandpa


Folding Rigs
SuperMicro 4 - H8QGi-F 4P - Opteron 6190 @ 3Ghz
ASUS 2 - P6X58D-E, i7-980X @ 4.5Ghz
ASUS P6P6X58D-E, i7-970 @ 4.375Ghz
ASUS Rampage III Gene , i7-970 @ 4.4Ghz
ASUS Rampage II Gene , i7-970 @ 4.4Ghz
ASUS Maximus IV Extreme-Z , i7-2700K @ 4.8Ghz, ASUS Matrix GTX 580
ASUS G73JH Laptop i7-740QM