I just restarted my laptop to finish installing a Windows update and now it is stuck on please wait. 

I have tried a system restore but there is only one restore point in the list and it does not work for some reason... 

I also tried to do a refresh but it asks me for media. I plug in the usb I used to install windows 8 a while and go and says that the media failed to load. 

I'm kind of stuck on options now. I can't boot and I can't restore and it seems I cant format either! 

Is there anything anything else I can do to get things going?!

I'm running Windows 8 on a dell xps 14 ultrabook. Win 8 is installed on an msata drive and booting using EFi.