I see. At this time I suggest you flash my profile and stick with 1 4GB module then. looks like it's either personal incompatibility which is impossible to solve or troubles wit motherboard/chipset. You may try to use another 4GB stick with your one. In fact I would do it anyway = sell 2Gb and buy 4GB.
P.S. 30 times?? You are hard flasher
less is better. I guess many-many hundreds times but who knows.