no my computer is not overclocked....i got in touch with an individual on newegg who has the same mobo (DG41RQ0 and bought the same ram PGS28g6400elk who experienced something similar to what i'm experiencing. he recommended i use the windows memory diagnostic tool which i set to extended, default and 10 passes and it had been running for almost 16hrs now without any hardware problems detected.
The one thing that i forgot to do when i reinstalled win7 was to actually remove my ST and see if the problem persist, so after the windows memory diagnostic tool finishes i'll do a fresh install without the ST to see if its the issue.
I have eliminated the gpu, powercolor single slot 6850 from my troubled hardware bcos i ran furmark for 6hrs with catalyst control center in overdrive @ 850mhz and 1100mhz, the temp ran up to 75*c but there was absolutely no flickering, artifacts or nothing,
My PSU is antec earthwatts 750watts.
tech specs: mobo intel dg41rq
gpu powercolor single slot 6850
ssd 64gb microcenter brand g2 series OS only
hdd WD2003fyys 2tb storage only
sound card Essence ST
network adapter linksys gigabit eg1032v3
disc drives liteon bluray ihbs208, hp dvd drive
PSU antec earthwatts 750
CPU intel q6700
case apex:(supercase/allied) sk393