SW-640B is not on our product list.
Please check your modelcode.
-Delete all recoding program and virtual-drive program.
And then please install Bundle S/W program and check whether your drive is recognized or not in Bundle S/W program.
If it does not work, delete Bundle S/W program and follow below steps.
¨ç Start Windows-> Click Run and input "regedit" -> HKEY_Current_User -> Software-> find all deleted programs's folder and delete all and reboot compute.
¨èStart Windows-> Click Run and input "regedit" -> HKEY_Local_Machine -
>Software -> delete all deleted program's folder.
If your problem is same, please give more details of your problem.
K, for one, I don't understand what they are trying to say, and two SW-640B must be their product if my computer says it is that model number. God, can anyone help me?