no I am not overclocking. and my graphics drivers are the latest (final version available) for my video card. NVidia recently stopped making drivers for my video card, so no new versions are expected
just for reference, my video card is a NVidia Geforce GT 330M with 1Gb GDDR3 discrete memory (dedicated video memory). my system does not have another video card (like integrated intel graphics).
current NVidia drivers are version 340.52
does memtest86+ support 8gb of memory? I know that windows 7's built in memory tester has a memory limitation. I am not willing to go through the removal and swapping out of the memory cards in order to test the memory.