Ubuntu not Booting after Graphic Card Update

[Tech_Wiz]

I recently changed my Gfx from 560Ti to GTX 960. And since then whenever I try to start Ubuntu it hangs on the start up screen. Windows runs fine.

I can boot through Recovery Option to Terminal but apart from that nothing.

Please help.

Not very well versed with Linux yet so step by step advice would be really helpful.

 

[bssunilreddy]

How to install the latest Nvidia drivers on Ubuntu 14.04

Source:How to install the latest Nvidia drivers on Ubuntu 14.04 Trusty Tahr
Source:*www.google.co.in/url?sa=t&rct=j&q=..._bngDg&usg=AFQjCNH2k-ToDqhRikeJndqiEbANAMegTw

 

[Tech_Wiz]

Didnt work.
I purged the earlier drivers. Installed the -current and Now screen goes black. Earlier it use to hand on Boot Screen but now that also is not coming. It installed 304 Version I think.