Hello TheHero2012, welcome to SF!
For better mem testing use:
Download a copy of Memtest86 and burn the ISO to a CD using Iso Recorder or another ISO burning program.
Boot from the CD, and leave it running for at least 5 or 6 passes.
Just remember, any time Memtest reports errors, it can be either bad RAM or a bad motherboard slot.
Test the sticks individually, and if you find a good one, test it in all slots. http://www.sevenforums.com/tutorials...test-memtest86
Sorry, should have read better. Windows 7 64B will not run on just 1Gb of RAM.
If it runs ok on the 32B then there is prob nothing wrong with the ram itself.