Hello all. New to forums but learing quick. I bought a used psp from Ebay and shocked how nice and clean it was. No batt and memory but with the transplant of my own , fired it up and guess what. Won't play any umd's. No errors show up and drive makes alittle spinning noise , that's all then stops. The little circle or I guess busy symbol in the lower right corner keeps searching for a disk but like I said no errors pop up. I tried some tricks I have seen on some forums tonight but need help. Wanted to surprise my little guy with one without paying retail. Any info would be great.