I got this thumbdrive today. It works by booting 1st to the usb drive. I have windows 7. When you get the boot menu on start up and select this drive, it boots windows 8 and many programs for my new work from home job. My problem is that it worked earlier, It wouldnt shut down though. I held the button til it powered off , then removed the drive. I went to start it up later and i can see the start up window and little circle of dots moving. It goes to switch screens to login screen and goes black. wont load from there. Is it broken or what?