I've got Sonic Generations, Need for speed Hot pursuitand other similar games. And all these games lag (I play them on my dad's computer but I'd prefer to have them on my laptop). My dad says that sometimes reinstalling windows can result in major speed boost (since the registry gets empty). I'm asking will reinstalling windows result in a speed boost in games? My specs: video card:ATI Mobility Radaeron HD 4570 (512 mb) (I think it's powerfull enough to handle these games) processor: AMD Athlon 64 X2 QL 64 (2.1Ghz) (I believe here's the problem) 4 GB RAM I'm running windows 7. And Sonic Generations' minimal specs are: Microsoft Windows 7/Vista/XP Intel Pentium Dual-Core T4200 (2×2.0GHz) or AMD equivalent 2GB RAM (Windows 7/XP)/3GB RAM (Windows Vista) NVIDIA GeForce 8800 / ATI Radeon HD 2900 11 GB free hard drive space, which my laptop shuld handle without lag!