So I did P2V My Exchange server. Everything went smoothly. No errors during process. But...
I have powerful host.
1.I created Hyper-V new VM.
2.Browse VHD location
3.Gave 4.5GB of ram.
4.Turn off my physical Exchange
5. Started Hyper-V VM Exchange
6. And got just black screen with blinking cursor at the corner.
I looked at my resource monitor -> VM took 4.5GB from my Host's RAM
But I still have black screen with blinking cursor at the corner. I waited about 3 hours, and still nothing.