WD Passport drive showing up with Unallocated in disc management

Hi every body
So it was working fine, i turned off my computer and went to bed, when turned it on the next morning the drive was no longer showing up so i checked disc management and it was in there as unallocated, the only options that are there when i right click are: Properties and help.
Im running Windows 7 ultimate x86 (32bit) on PC and the External Hard Drive is a Western Digital 1TB Model WD 070A USB device.

I followed this page : Western Digital drive showing up with Unallocated in disc management

but at the fifte screen check disk shows: "partition: Read error"
I enter search to find partition but after a long long time it finds nothing!
I dont know what to do

Thanks payman for putting out the error message you got on the fifth screen in Test Disk.

That was indeed a message that I had not anticipated when I wrote that post you had referred.

It would naturally mean that even Test Disk was unable to read your hard disk.

As far as I can see, your hard disk is beyond normal redemption/recovery and may require a professional Recovery if you want to recover any data.

However in all these cases, nothing is definite until proven and I may be wrong too .:)

Hold on to check whether other experts chipin with their brainwaves.:)

Your query answered in the other thread MY EXT. HARD DRIVE WORKED GREAT UNTILL...help?!

Good Luck.:)

there may be light at the end of the tunnel. thanks)) will start on that now and keep u posted.