Thanks, I will try both options and revert.

But your earlier solution of clean wiping BOTH AMD AND INTEL driver in safe mode with DDU and then installing Intel driver gave a ray of hope that it could not be hardware fault. Intel did work properly with driver enabled. Only when  in step 2 that I tried to install AMD afterwards, the same issue started coming. so can we say that INTEL can live successfully independent of AMD??

Many thanks.

https://www.dell.com/support/home/en-in/drivers/driversdetails?driverid=3p8wf&oscode=wt64a&productco...

Tried above option but while installing got this error:

The OS version is not supported  for this product!!!!......

Those were stock Dell drivers (Latest) shouldn't have that issue.
Now I am suspecting a BAD GPU CHIP.(Motherboard)

Remove Driver again and try this one
https://www.dell.com/support/home/en-in/drivers/driversdetails?driverid=3p8wf&oscode=wt64a&productcode=inspiron-14-5459-laptop

We were trying to avoid but Last option : Factory image restore from F12 > SupportAssist OS Recovery > RESET > RESET and update

Double Click on Driver file and choose extract instead of install 

Extract to a new folder any where on your computer. 

Open Device manager > Display adapter > right click on graphic adapter and choose update driver

1. Click Browse my computer for driver software.
2. Click Browse and select the directory where the driver files are located. (graphics folder) 
3. Click OK, and finally click Next. Drivers are now being installed.

Just tried this, it mentions the best drivers are already installed....

Do you mean this?

Factory image restore from F12 > SupportAssist OS Recovery > RESET > RESET and update

Yes thats the best way to do  it.

It removes stock factory image and downloads a fresh OS from Dell. 

This will the last step and if the display works fine after  this please pause windows update as soon as the install finishes and run windows show/hide troubleshooter. 

If the display has same issue even after this step, you will need a new motherboard. 

Hi i can't find Dell os recoveery option under f12..i only see Ssd or windows boot manager

This means you have done a full format on HDD earlier or used windows RESET feature in past. 

You can created a Recovery image using a below tool 

You will need a flash dive. 

https://www.dell.com/support/home/en-in/drivers/osiso/recoverytool

Thanks. Just completed. Reset needs a wifi connection and under Dell recovery my wifi card seems disabled. Do you know how to enable it under dell os recoveery environment?

Use factory restore than. 

Or use a different USB tool to get the latest Windows image 

https://www.microsoft.com/en-us/software-download/windows10

My problem  minimum solve, 

I tried to roll back os version to win 8.1 

and disable AMD and intel graphic card 

after boot my laptop starts on normal

But now i cannot use internet in laptop it will update drivers and problem goes on

The Main problem is Intel onboard graphic Card, i tried in service center they also not getting solution for this, have you tried anything

Having the same issue , also checked from the service center they said that it is the matter internal graphics card, complete motherboard have to be replaced. Reading all the discussion here , I think motherboard have to be replaced. But now i am thinking of updating the laptop instead of purchasing motherboard  only.