Hi im having problems with my boot up when i replaced my back fan with new 4pin fan. Well i tried to start my computer but it blinks red light on memok/dram. Ive tried to push memok button and reseted cmos even i reinstalled the older fan back. Ive also took the ram out and back (2x4gb kingston hyperx) but every startup the fans start normally on cpu cooler on gpu and both front and back fan but the dram/memok red light is blinking. Should i just wait? How long does it take to complete memok?