Hi, I'm using a lenovo v510 i5, 4g ram, 1TB of memory, Windows 10, and i think it has and intel graphics card preinstalled. My problems with it are that i have 6 months since I bought it and it freezes and lags so much. when i turn it on it takes so much time to boot up and when it boots up, i can't easily open something because it lags so much and after 5 to 10 mins it starts to work better but not fast. please help me!!