Glad to hear that things have settled down! Do you mean the camera is staying connected, the screen stopped blinked, or both? Exactly what was the screen fix? Disabling PCI Express Link State and/or reinstalling Nvidia drivers? At this point, I don't think a clean install is going to make much difference, especially since DISM and sfc fixed whatever problems they found. You might try chkdsk c:/f again... And if all hardware passes the ePSA diagnostic tests from the F12 menu, it doesn't sound like hardware, unless, possibly, the GPU is overheating. So just keep using the system and let us know if things are ok after a few days. And then mark this thread as having an Accepted Solution...
Win 10 19043 and Nest Outside Camera I am not sure exactly where to post this, so I thought I'd start here. To me, this is rather unusual, so none of the troubleshooting steps from Nest apply. It must be either an XPS 8930 or Windows problem. Here is the Problem: On the XPS 8930, my camera keeps dropping its WiFi connection and I have to log in several times a day. Here's what is unusual. I have 2 PCs. One is my XPS 8930 and the other is an older PC. The "other" PC is my backup PC and is running the same version of Windows and all the same software the XPS 8930 is running. The problem PC is the XPS 8930. The "other" PC is can run the camera app with no problems whatsoever. I can leave it on 24/7 and the camera never goes down and I never have to log on. But the XPS 8930 drops its connection many times a day and I have to log back in to get the app working again. That's why I think it must be the XPS 8930. I have had this camera for several years with no problems whatsoever until about a month ago. All the troubleshooting from Nest has to do with the wifi connection, etc,  but that is doesn't apply since I have another PC directly beside my XPS 8930. All connections and distances are the same.  Thanks
XPS 8930, Nest Camera, WiFi connection