im having very bad scanning results with cdspeed. yesterday it was all ok. quality rating is allways lower than 50, most 0. even when i scan my old medias with good scannig rate such as 97 98, having same bad results. why am i having this bad result. might be any program or drive is foulty. its a benq1650. i bought it a week ago with box. and allways use mcc004.