Black screen after installing Nvidia driver.

I have the Nvidia rtx 3060 in the Hasee T8 laptop and the rtx 3070ti in the Dell g15 laptop.

I didnt have any issue with the Dell it works both graphics enabled. Its the Hasee T8 had isssues.

Note for the Hasee laptop, once i had updated drivers from Nvidia working, i was able to go back into the bios and disable the Hybrid and enable only the discrete GPU. For some reason Nvidia Windows app did not like having both the GPU on. Also note that Thunder Bolt 4 is not supported by some Nvidia RTX 30 series but is on the RTX 40 series. Again this is something that Intel, Nvidia, Windows and the manufactures had known before selling their products. I decided not to spend another 2k to 3k on laptops to find out.

I just legit had the same issue cept I'm using a 3070ti FE

I hope this help. After looking back on older laptops i own both Dell and HP. Normally the Discrete GPU and the Integrated are both turn on in Bios. Provided you have the right CPU that has integrated GPU. Today some manufacture turn it off and only use the 3rd party discrete GPU. Today I'm going to discuss the Intel and Nvidia BLACK SCREEN laptop issue and not AMD.

Create a restore point and recover USB drive just in case you have to go back.

1. Both GPU should be turn on in Bios. Hybrid mode.
2. Install the latest Intel Ires Xe Graphics driver (if it fails to install first time try again)
3. In Nivida Graphics Control Center make sure the PhysX should be in (Auto mode)
4. Install the latest Nvidia Graphics driver for Laptop (If it fails to install first time try again or select repair.)

So what's the term "WHQL" certification means if Microsoft allows this? Yes I'm very aware of Nvidia and AMD that they disclose statements that we have to go through the manufacture to get updates and they do not support other manufactures hybrid power feature. This is poor escape clause and allow the manufacture to stop supporting drivers for their products? Because, at times it requires a bios update as well. Crypto miners don't care because they brick the firmware and recode to turn everything into BOTS. Back in my earlier days in the military back when using NT4.0, we had to lock down all servers and clients so that nothing could be modified nor added without proper authorization.

you must contact nvidia support as well https://www.nvidia.com/en-us/support/. Create an account, describe the problem and you will be asked to submit some files for system analysis. I did it already but the more users do it the faster the problem will be solved. Use a light torch to submit system data from bad driver state, because the driver disables only the backlight of the screen, not the data transfer. The problem is not the hybrid power mode, the new driver does not properly recognize laptop lcd screen on notebooks connected directly to nvidia cards. This is a driver bug and nvidia is responsible for correction, not the manufacture.