hddguy wrote:
You need to first change the method of connecting the HD, this may include fitting HDD to a USB enclosure and connecting to PC.
This is generally caused by a bad connection whether it is the connection within your laptop, or the IDE channel itself.
Try conenct this to a secondary PC via USB and write here your results
First of all, thanks for super fast reply.
Actually, I did that already.
When I plugged the USB external enclosure, I heard the sound (usually when you plugged USB device).
But windows doesn't recognize it, both "My Computer" and "Device Manager".
I also tried my old 2.5" Hitachi HDD, the original HDD before I changed the brand new Toshiba.
It still have the Windows XP Home OS there, and doesn't have any problem loading Windows.
So, I don't think bad connection within the notebook nor the IDE channel is the culprit.
Any more suggestion?

Btw, is my data still there? Or they already damaged or lost?
