Oculus monitor (DK1) not detected after installing latest Rift runtime drivers

My oculus was working fine before installing Rift Runtime drivers 
Now after installing the drivers, 
1. I get 'No signal Detected' on Oculus screen, although the oculus sensors work fine in the game, but blank screen on oculus monitor 
2. Oculus monitor not recognized in Display -> Screen Resolution

I have Intel Graphics card instead of AMD/NVDIA. Is the issue because of that ?

I am using DK1