During boot up I get for a fraction of a second a black screen with three lines of errors. Otherwise the system works perfectly, boots ok and operates very fast. Should I bother about those lines? Is there a way to stop the screen and read what the info is? Thanks for a kind suggestion.
Execute on terminal
dmesg | grep error. That's probably going to show those errors you see at boot. You can just use
dmesg to see all the output and search manually.
If your errors are like:
usb 1-1.4: string descriptor 0 read error: -22
Then it should be fine, otherwise you can create a new question or ask me in the comments :)