Computer freezes on boot before memory testing

[Nalif]

I was having issues with a game of mine hard locking my PC. The only way to get out of it was to hold down the power button and force the PC to power down, then boot back up. Trying to trouble shoot the game, this happened several times. Then, it started freezing on the memory test. It's not really freezing, though - if I leave it sit for a very long time ( 5 to ten minutes ), it will eventually boot into windows. Any ideas?

 

[lowteckh]

Wild guess - maybe it's the memory. Run memtest.

 

[Nalif]

Memory tested fine. I've noticed that once it finally boots into windows, if I reboot, it doesn't hang any more until I've had to force it to shut down a few times.

 

[engiNURD]

How long did you run memtest (how many passes), and what version did you run?
Did you run it on both sticks or individually?