mere pc m ye problem he k ye khulty waqt bilkul thek hota he per phir chalty chlaty 1 ghanty m itna slow ho jata he k phir agai chalta hi nhe he arrow move hony m b 3-4 seconds lag jaty hen... aur hamara cd rom b kam nhe kar rha pc usse detect nhe kar rha hmne wire aur cd room b change kr k dekha per phir b kam nhe karta, usb boot karny k lye b 4 gb + chaiye wo he per usklye b sari dvd ko copy kr k rakhna hoga pc m aek to pc slow aur uper se windows 7 ko copy krna itna assan to hoga nhe islye windows b install nhe kar sakty... to ap experts aur koi aur solution dijye k ye chalty chalty slow hota q he...aur kia karna chaiye hme...