Vista - Bluescreen on startup, while System finding device

Need helps I had accidentally add an unknown device/driver from the add h'ware manager of control panel (stupid me). Now my system can't startup as if will turn to blue screen after after logging in and while system start searching for the new device. I have try repairing from boot DVD but apparently no problem with the boot files. It is just that need to stop the services from running once system start. I have tried to run msconfig, but bluescreen occur too soon before manage to hit start/run/...button. Other situation, there is no restore point as yet bcos it was a new notebook & forgotten to set one. arhhhhh! Also tried BDCedit creating new boot up but no effect to stop system searching new device after login. Don't wish to reinstall new as I have new datas on my drive c: that hasn't been backup for weeks. K.low/designmal Sony VAIO SR-26GN on Vista business Spec: VGN-SR26GN : VAIO SR : VAIO™ Notebook & Computer : Sony Asia Pacific

Wish everybody a happy holiday and great 2009 new year! By the way, anybody have any solution to my problem?