Unity editor not responding

I am trying to use unity editor on my laptop,first time download Worked just great, but for some reason I had to uninstall the hub and the editor.After i reinstalled it, it just stopped working. i tried uninstalling and reinstalling again, but no use.I even tried to uninstall visual C++ and reinstall a newer version, but in vain.
Btw: I have a good laptop with an i7-4800mq (4cores 8 threads) with 8gb ram and a k1100m graphics card.
Any solutions please.

Try clearing out your system registry and try again.