VMWare Player is not working after installing Hyper-V on windows 8 Pro

I have got a solution. This method will allow me use one technology at a time (which is my current requirement)

You can disable Hyper-V without uninstalling it. Start a command prompt with administrator rights and execute the following command:

// to disable hyper-v
bcdedit /set hypervisorlaunchtype off

// to enable hyper-v
bcdedit /set hypervisorlaunchtype auto

Both Operations require restarting your computer.

Reference: https://forums.virtualbox.org/viewtopic.php?f=6&t=41258#p236620

Note: I also found this very helpful when using intel x86 android emulator because without this, it was not possible to use it.