Purchased my XPS 15 9560 with i7-7700HQ, 16GB RAM, 512GB NVMe SSD, GTX1050 4GB, and 1080P display back in June 2017. Since installing the 1.5.0 BIOS update, I received a DPC_WATCHDOG_VIOLATION bluescreen, and now my laptop no longer boots.
Upon powering on the laptop, I'll usually see the Dell POST screen, then it will either go black for an extended period of time before shutting down on its' own, or boot into ePSA SupportAssist Diagnostics and run through the quick troubleshooting tests. These tests will either result in a "Hard Drive - Not Installed" error, or show all hardware passing, but "No boot devices found" before shutting down.
As a computer technician with 10+ years experience in the field, I've already taken the appropriate steps to fully remove all power from the laptop, including unplugging the battery, and reseating the RAM and NVMe SSD in their sockets. The laptop still fails to boot or detect the drive on a regular basis.
Very occasionally I'll see the drive detected in the F12 Boot Options screen, as it shows up as a SanDisk A400 SSD, however, the system still locks up on a black screen should I choose to try to boot from it. I can get it to UEFI boot from a Windows 10 Installation USB, or from the Recovery USB I made with Dell's recovery tools, but only if I boot with the NVMe SSD unplugged from the motherboard. Otherwise the system hangs upon trying to boot.
I've opened up a line of support on the @DellCares Twitter support, but the replies are painstakingly slow, and no one has responded via Facebook Messenger yet. I've tried to open a live chat via Dell's support website, but it does not appear to be available right now, and I'd rather not call as my voice is a bit under the weather from a cold.
Where do I go next for support of my $2500 laptop?