It has been notified on VirtualBox official website that the current release of VirtualBox 5.0 does not support Windows 10 officially. You will have several problems when runnign VirtualBox 5.0 on Windows 10. Basically, I can create a new virtual machine and run it. But, the main problem I got here is the Network Connection. I can not see my network interface listed on NAT or Bridge mode.
I cannot get my virtual machine run when choosing Bridge mode. But I still can use it on NAT mode and the internet is working on the guest machine using this NAT configuration.