Nope, Sorry Todd tried everything you said. Was good for a few flights, then boom! 14 minute freeze 1 hour and 10 minutes into flight from KSAN to KIAD.
I happily fly PMDG 737NGX and 777 on my Win 7. Bought and Installed 737NGX on second computer last year with WIN 8 and never ever got it to run right. Graphics were major issue as were freezes and CTDs. Gave up I am sticking with the Win 7 system. But I knew in advance at least that the risk was mine.
I am one of the lucky ones. Zero problems purchasing, installing or activating. It is very different from 737NGX as advertised. Christmas has come early in my house. I expect months of learning this baby and will enjoy every day.
Do you have fuel? Also, if you have fuel did you try to start the APU before there was fuel? Running the APU dry will often result in a damaged APU. Check for maintaince issues.
There has been a lot of press recently from Boeing on 737-900ER Sales. I hope PMDG is getting close to releasing this model because I already have a list of routes to fly with this baby.
http://boeingblogs.com/randy/archives/2011/11/the_sweet_spot_1.html