I guess you are new to these forums, so you are very much Welcome! However, please stick to this one Thread only, until you are satisfied there is nothing else we can do to help on your chosen subject. F8 is correct for XP Safe Mode so I would keep trying for a little longer, it might take quite a few attempts. Meanwhile, other members here might come up with additional suggestions. To prevent confusion, please mark your other thread with a Green tick - you can do so by opening it and then clicking on one of the grey ticks down the right-hand side. That way, others will know that you are watching this particular thread.
Surface Pro (2017) vs Surface Pro 4