My Acer aspire E15 is running very slow . When i got this laptop last year as a prize it worked very well that time it was Window 8.1 Pro. but after some time it got blank . I repaired it by a mechanic he made i Window 8 and didn't installed drivers , then i went to another mechanic he installed drivers but now it runs very slow. It doesn't support GTA San Andreas . Please Please help me how to fix this problem !