migration assistant

Sorry, but that is just not enough information in order for us to be able to assist you with a potential solution.

• Writing an effective Apple Support Communities question - Apple Support Communities

I suggest starting by reviewing the following article to make sure you didn't miss any steps:

• Move your data from a Windows PC to your Mac - Apple Support

Do not connect wirelessly, if you are migrating use an Ethernet connection between the two computers ensuring they are on the same network. Either that or put critical PC data onto an external HD and use that to migrate from.