i have intel hd 3000 and nvidia geforece gt 620 m in my samsung notepad. the lap is 6yrs old but some games like pes 17 worked great.Recently i formatted my laptop from win 7 64 bit to win 8.1 64 bit and made sure necessary drivers were installed and working properly. but since formatting, the games that worked well suffer from heavy lags. Any possible fixes?
Also i did an driver check using intel official software it said all drivers are up to date. but in detailed report showed that geforece 620 m is offline.