We're missing the point here. Memtest can only test around 2 gigs at a time before giving that error message. And the reason for this, according to their error message, is that Windows 7 limits the amount of RAM a single program can allocate at any given time.
So my real question becomes: Is that true? Does Windows 7 limit the amount of RAM a single program can allocate? And if so, doesn't this mean my high-end gaming rig is going to cap the amount of RAM a single game can utilize, therefore rendering my 16 GB of RAM pointless if all I'm using it for is a single game and no other programs are running?
And if "yes" to all of the above, is there a way to bypass this artificial limit? I know I'm biting off a big chunk here, but any insight would any least point me a direction instead of riding out blind.
Something doesn't sound right. Memtest boots off a CD or USB drive. It is not run from within windows. When run properly, windows doesn't even come into play. Memtest doesn't care what OS you use. If you are running the windows based version of memtest, then yes you will get this error. 32 bit programs run in windows can only use 2 gig of application memory. 64 bit programs can utilize all the ram.
Anyhow, if you aren't booting directly into memtest, then you're probably using the wrong version.