Therefore, I think this will be solution for most of you: I will post here a new guide within less than 24 hours how to install ADB and fastboot in Ubuntu/Linux OS. If you already have installed Ubuntu OS, it takes only 2 min to install ADB and fastboot.... and IT WORKS THERE!
Linux is in general much better than Windows for flashing Android devices. And it needs no stupid, nasty drivers so the things can't go so easy wrong.
Use this time and already install Ubuntu aside your Windows. In most of cases it works flawlessly. You will have dual boot possibility. Please check WWW how to do it, it costs bit of time but it is really easy afterwards.
tetakpatalked from Nexus 7