Resolved -- Started working suddenly after trying to log in over and over and over and doing F2 -> clearmaps console command every time. Now it works on Mobile and Win7 again.
Update: Was able to get into the game on my home connection after moving to a different map while on mobile data, but now the problem is still occurring. It only worked for a moment then blacked out again. It only worked once.
Everything is black and nothing loads. I downloaded the latest client and deleted the old one. Cleared all temp files and rebooted, still happening. This also is happening on mobile. It happened before I updated, and after. When I go to play the Gold server, the Prof. Oak intro plays so I'm assuming Gold will work, but I don't have any play time there and am still fairly new to the game and playing on Silver only so far.
Update: It appears to somehow be my connection. Why would my connection be refusing to load map data? While troubleshooting, I decided to turn off wifi on my phone and the game loads on mobile data. I reset my router and still have the issue on PC and Android.
I was just playing last night. Last thing I was doing was fishing in Pallet town I believe.