We have the CM3000 on a Windows 7 64 Bit Box. It stays running fine through all of this, but if you attach the remote NV5000 system with the CM3000, it shuts down.
I am currently downgraded to 7.3.0.0043d and it works as expected. But, using the latest version on the NV5000 it doesn't work.
We have perhasp 5 or 6 other systems with NV3000's (1), and NV6280's and some other boards and they all work fine with the latest software feeding the CM3000. But, the NV5000 systems don't work on Windows 7 64 Bit with 7.7. I believe we tried Windows 7 32 Bit as well with 7.7, and Windows XP with 7.7 -- basically 7.7 doesn't like the CM3000 requesting data and so it dies.
I have 3 NV5000 systems which are basically alike (3 slighly underpowered Celeron's and then a Dual-Core which meets specs), and then 1 which is different (plenty of extra power here). We have swapped out video cards on the DVR's and it didn't help. I conclude it's a software issue, but I'm open to suggestions as to why I can use 7.3, but not 7.7 on the same machine with the same DVR card.
Avermedia told me to try a differnet computer, and given that we've tried 4, I'm sure that there is another answer. Namely that it just doesn't work.