I have a HDCN u1-0 data 500gig external hard drive...i think its only on japan that has this kind of product...ive been using it for 2-3 years now...and this morning it just dont show up on My Computer...lately before this happened when im openning files from it..it becomes slower and sometimes it hangs...and today it wont even show up anymore from My Computer...power it entering it..cuz the power indicator is lite up...and when i try to dettach and attach the usb cable...the sound of windows installing a external devices is there..and the usb be can dettect the device...but when i go to administration tools/computer management/storage/disk management... i cannot see my external hard drive...and it shows disk 1 unknown not initialized.... can someboby...someone...pls...pls...pls..pleeeeeeeeeeeeees....help me...