FortiManager VM Hyper-V

Hello,

Please someone help me with this situation:

I have FortiManager 5.2.4 VM on Hyper-V 2008 R2. I've upgraded FM to 5.4.6 version according to the upgrade guide. After restart FM does not start -> on the console appears boot, then loading vmlinuz, then more rows with .... and "ready". Then it stays like that. Do not get to the login.

I'm asking for help, please.

Thanks.

Daniel