Unity 5.1.03f Stopped working on windows 7 64 bit

I downloaded unity 5.1.03f 64bit editor for windows and installed it. Installation is error free.When finished the installation, When tring to open the unity, the following error is showing. How can I fix this?

I’ve had the exact problem, when trying to run Unity 5.2 + on Win7 64 bit, you actually need Service Pack 1 installed, so if you have not installed SP1, give it a try.