Hi,
Since former Windows edition runs Hyper-V with no problem, your CPU should support Hyper-V.
On the other hand, in my opinion, the reason why crash dump file couldn't be generated might be caused that system crash occurs before system load successfully, as crash dump file generate after user log on.
For your problem, it probably caused by driver compatibility problem with Windows 10 Technical Preview 10041.
Any other app or service startup with system can be also cause this problem, please try to make clean boo for test.
http://support.microsoft.com/kb/929135
In addition, if your computer has Bluetooth model, please disable it for test. According to my experience, sometimes Bluetooth can be cause this problem.