Please HELP! How long should a nandroid restore take?

[carguyjohn350]

My HTC Evo 4G which is rooted and running the MikG rom got stuck in a boot loop, so I tried to do a nandroid restore and its been running for like two hours. Its a screen that says htc and like a little sideways triangle and a rounded square and then another sideways triangle. It has the scrolling dots and theyre moving, but this seems to be taking a loooong time. Advice or thoughts?

Thanks.