No available windows
I purchased a brand new MacBook Pro! Used the internet one time and the next time I went to log on, it gave a small not in the middle of no available windows! I tried looking up this error and saw one effort of disabling the track pad but still unavailable to open Safari! Also what else is very discouraging is once I turned on my new laptop my old 12 year old Mac Book Pro is not working and just has a circle with a line through it like it won’t perform anything! I am very discouraged by this NOT being user friendly and simply not working! Help please
MacBook Pro (2020 and later)