Follow Up to: "5820 Precision motherboard failure?" So yesterday afternoon, the Dell tech showed up. A super nice guy who really knew his stuff. He changed out the motherboard on my 5820, and very soon had it up and running. Thank you, Mark it was really good to meet you.  I re-built my A/V studio and now, everything seems to be working properly. And so it should.  Worth pointing out, though three things. 1. The appointment emails from Unisys provide very little response time for confirming the appointment and each time the link had expired. 2. The failure of the motherboard was likely due to a "critical update"  from Dell which apparently mashed up the BIOS. Thank you Dell. While there are probably other ways to repair the BIOS but since the unit wouldn't boot up at all, switching out the motherboard was probably the best option. 3.If you run audio and video plugins expect, for some brands, to reinstall your licenses if you have them on your OS. For example, it appears that Waves plug in licenses ID the PC with its 12 digit code, something like, A4BB6 and so on. Once the new motherboard had been installed, this ID code had changed. My licenses did not recognize the 5820. Solution, send all of your licenses to the Waves license cloud and then re-activate the plug-ins from there. additionally, download them to a USB flash drive. Problem solved.  I hope to have a problem-free day back at work. Thank you to Louie in support and of course Mark for his courteous professionalism.  
So, this week my Precision 5820 Tower stopped operating after the latest update from Dell. Of course, I am in the middle of a huge project and mostly dependent upon the processing power of this unit. To be fair, it has worked well for the short time I've owned it. Delivered on Jan 8th 2021, just over 1 year old. in exchange for $2400.00 in cash. As I said, it worked well, after we ironed out a few bugs with the video card. That is UNTIL I decided to upgrade/increase my RAM and then ordered from Dell what I presumed would be the correct type of memory stick. Well, it wasn't. My PC stopped working and a tech at Dell support managed to get it up and running again. But still, no extra memory. And I don't have the guts to try again. Anyway, two days ago, I installed the latest Dell update and my system shut down to restart. It never recovered. I'm not very happy. After a lengthy conversation with Louie at tech support, he told me that the motherboard wasn't working. After only a year, the motherboard doesn't work? A tech is coming to our home office on Monday to hopefully repair it under warranty. Sorry for your inconvenience just doesn't cut it. I do not feel I can rely on this system again. I will not be recommending this product to anyone, nor the salesman who sold me the wrong memory sticks in the first place.  Lastly, Dell assisted in building this unit, specific to my business needs. I don't recommend that process either. 
Precision 5820, motherboard failure?