macbook pro 7,1 10.8.4 won't run AHT
I have a macbook pro 7,1 (2.4 GHz 13" - MC374LL/A) with Mountain Lion (10.8.4) and latest roms (MBP71.0039.B0E and 1.62f7). I occassionally get some strange grahipcs behavior and some other odd behavior so I want to run a hardware test but can't seem to get it to run.
Restarting while holding D causes the fan to spin up and then after a long delay it boots normally. Holding opt-D boots to the hardware test menu but then I get:
apple hardware test does not support this machine
Any thoughts on how to run the hardware tests?
MacBook Pro (13-inch Mid 2010), OS X Mountain Lion (10.8.4)