See attached video to see what I mean with the issue:
I was getting this issue with my Razer Blade Advanced 2019 - most people thought it was a loose cable but I knew it was Intel software related because it worked fine before i did my 2tb SSD upgrade and did a fresh install with windows. Essentially, windows installs its own version of the Intel UHD 630 drivers and they do not play well with this version of windows and the razer. You have to force uninstall by doing the following and then installing:
1. Goto the following link and download the latest intel drivers for the UHD 630 - https://downloadcenter.intel.com/product/98909/Intel-HD-Graphics-630
2. Disable your wifi or unplug your ethernet from your internet after the file is completed. This will make sure that windows does not try and connect and get the same driver you are about to uninstall.
3. Go into device manager and under display adapters, double click the intel UHD 630 and goto the drivers tab and click uninstall. MAKE SURE YOU CLICK THE CHECKBOX THAT SAYS "DELETE THE DRIVER SOFTWARE FOR THIS DEVICE"
4.Once its uninstalled, go to the menu on top of device manager and select Action and then scan for hardware changes. Windows will add some generic drivers.
5. Now you can go to your drivers you downloaded from the link above and install them from the .exe file. Reboot, go back into your device manager and double check that the versions match up.
So before you plan on sending this in RMA - do this first.