Black screen when booting windows

[X73]

Hello guys am having a conundrum after installing nvidia and intel drivers when I boot the omen logo comes boots into windows with startup sound and everything but no display ( black screen) when I go into safe mode and disable the nvidia graphics and restart  the laptop boots with display and I enable the nvidia graphics it works but restarting again causes black screen. Also using the advanced nvidia optimus in the gaming hub when it's at automatic and switch to nvidia gpu it comes but when I switch back to automatic it goes black. Now when I try turning off the laptop to go into automatic repair I get a blue screen saying driver verifier dma violation but when I leave it to boot I get a black screen 

[Mr_RadhaTech]

Boot into Safe Mode and use Display Driver Uninstaller (DDU) to completely remove the current Intel and NVIDIA graphics drivers. Then boot normally, pause Windows Update, and download both the Intel VGA and NVIDIA VGA drivers from the official HP support page for your laptop model. Install the Intel iGPU driver first and restart, then install the NVIDIA dGPU driver and restart again.