Windows 10: How to request an exchange?

I have a surface laptop 3 that is faulty and still in warranty. I've been looking for a long time on the website and I still can't find where or how to request an exchange for the device. The help page simply says 'select request a return on order history' but I don't see such an option. Can someone help me? How do I even contact Microsoft anymore with the live chat feature being taken down??

:)

 

a request for device descriptor request failed

Maybe it's time to step back from the current efforts, and start over. I suggest you read over this excellent tutorial and try all of its steps: [Solved] Unknown USB Device (Device Descriptor Request Failed) for Windows 10 - Driver Easy. The one that may provide you with some easy relief is the one where you uninstall the device whose descriptor is failing, reboot, and see what happens when device enumeration recurs during boot-up. If you're lucky, it will fix itself.
HTH,
--Ed--

 

True core and memory clock on my GFX...what should I trust?

i have the list of nvidia core and shader steppings if you like, it shows the requested clockspeed versus the effective clockspeed.

 

a request for device descriptor request failed

my bios is and custom unlocked bios (latest version) (thanks to Bios Mods -The Best BIOS Update and Modification Source ) because of lenovo hardware whitlist maybe thats causing the problem???