Black screen with cmd

Nov 18, 2017
3
0
510
Hi, ive been playing Cs and minecraft and noticed my ping is higher than usual so i let it be for a week and still the ping is high so i thought it was a virus cuz my pc yad i virus b4 so i scanned it w/ avast and malwarebytes and after Malwarebyte finished i killed all the virusand my pc restarted thought it was bothing and now when i start my pc its a black screen w/ cmd any fixes? Without having to renstall windows?