Changed resolution on my computer and then the screen went black with floating box, can not use keyboard or mouse. Need help1 person needs an answerI do too

Try going into the advanced boot options and slecting "Safe Mode" see if it will boot there, if so then perform a system restore on it, if it doesnt boot into safe mode either, then go back to the advanced boot menu and try "Last Known Good Configuration"Dennis ,, Owner: Please dont forget to mark any post(s) that helped as helpful or answered EMAIL ME:: PERSONAL EMAIL :: BUSINESS EMAIL