Asus MemOK light flashing

[fagetti]

Specs:

-p7h55d Asus lga 1156 motherboard
-120gb samsung ssd
-4gbx2 ddr3 nonecc kingston 2400mhz xmp set ( i have set this to 1333 / 1066mhz same problem with --different timings)
-i7-875k processor


I have problem with memOK doing something on bootup. When i boot up my computer memOK light in motherboard lights for about 5 seconds, sometimes blinks for 2 times, first time 5 then for 2 secs and it reboots computer always once. After that it works fine. I run memtest for 1 pass and looks fine at 1333mhz.

I havent tested gaming or anything heavier yet but looks stable so far.

I did try to press memOK button on the motherboard for 5 seconds, it reset someting but problem occurs again. Im using slots A1 and B1 so second and 4th from the processor. This should be correct looking from the manual. What could be problem?

EDIT: looks like memtest is passing with 1600mhz also

 

[piasabird]

Maybe it is a power supply problem. i.e. voltage fluctuation. I would at least try reseating the RAM. That tends to scratch up the contacts. Ram does go bad.

 

[LTC8K6]

When the MEMOK! LED is blinking, the BIOS is tuning the DRAM settings. The blinking does not indicate an error with the ram.