Ok, let recap again.
- Your cannot have direct access to VM via iDRAC
- All you can do is to connect to iDRAC and see the host machine console (same as what you see from Display)
So, the question is what is your host OS. Is it VMWare or Windows with Hyper-V?
If it’s a HyperV with GUI installed on the host. Then you might be able to go to VM though HyperV console. (Sorry, I can’t really tell you how because I’m never use HyperV)
If it’s a VMWare ESX, you simple got yellow screen since VMWare ESX doesn’t offer a way to connect to VM from host. The best you can do in this case is to enter ESX Shell and reboot, power on/off, vMotion etc. via ESX-CLI commend (Which is a difference issue than how to use iDRAC)