It seems I am in over my head here...
I was trying to get my Nexus 5 to tether and I followed directions to add a line my settings.db. After I restarted my phone, it's now stuck in a boot loop with the 4 colored circles.
After some googling, it seems that by editing settings.db on my PC and putting it back onto the phone, I might've messed the the permissions which is causing my phone to bootloop.
I've tried pulling the settings.db files using adb commands, but they don't seem to be working. It doesn't recognize my device during the bootloop. And "adb devices" doesn't show my phone in the cmd prompt, and any adb commands I try gets me a "device not found" error.
Fastboot mode still works though I think, because"fastboot devices" shows my phone in the cmd prompt.
Is there anyway I can save my phone without losing the data I have, which is mainly my pictures?
...I won't be able to sleep unless this gets fixed.