assalam-o-alekom
bayeo may usb as a ram use kar raha ho apna ram 512 hy 512 usb sy attach kia hy total 1 gb hy xp win hy ab may win 7 karna chahta ho or win 7 k lea 1 gb ram must hy kia is 1gb ram sy win 7 hoga ya nahe zara dtail sy