How To Know What OS(Operating System) You're Using
1. Right Click Computer Icon (On Desktop) Or Right click Computer On The Start Menu
2. Click Properties
3. Then, See Under System Then System Type You Will See If It's 64 Or 32 Bit OS
If It's 32 Bit It Won't Work, But If It's 64 Bit It Will Work
Hope This Helps The Problem Of Your OS