How to fix the common Skype issue where you are stuck at a blue screen and unable to login to Skype. Bug seems to affect Windows 7, 8, 8.1 and 10.
"C:\Program Files\Skype\Phone\Skype.exe" /legacylogin
or if you have a 64-bit operating system:
"C:\Program Files (x86)\Skype\Phone\Skype.exe" /legacylogin