it be my own fault for not try it and return it immediately . when I get this I wait around two month before I even plug it in . however , it have never be able to sync with either of my two pc , a VISTA and a window 7 . I be very adept mechanically and can not figure this out . I have use many projector , so I be surprise this one just seem enigmatically complicate or it be simply just a mechanical reject . the lamp fire up , the fan purr , yet no matter what I do to get it to sync , all I get be a pale blue screen that read `` not synce . '' DUH !!! tell I something I do not know . and ... there be no manual , no online documentation , download or forum . I have contact favus entertainment and I 'll let you know what they solution be once they get back to I . advice : : : pay a few dollar more for namebrand quality . I be afraid I be out $ 250.00 -lrb- price in 2010 -rrb- . a expensive lesson ...