My lenovo y530 64bit system with vista64 home premium pre-installed just crashed (i do not know the reason), Recovery utility of lenovo do not work anymore. i then reformatted my HD and fresh installed vista32 from usb since my CD drive is broken. installation goes well. but why is it the blue screen appears everytime my vista32bit is loading (blue screen after the loading bar)? pls help me. i have 4gig of memory. is it possible that the pre-installed vista64 before is preventing vista32 to load? what can i do? Pls help.