How can I fix Data error cyclic redundancy check on a Maxtor External drive?

Dear experts,
 I really need your help. I have 465GB External drive (Maxtor) which has only 120 GB of data on it. The drive was working a few weeks ago but yesterday I noticed that I could not access the drive. The computer sees the drive but when I try to access the file on it I get the following errors:"You need to format the disk in drive" and "drive is not accessible, Data error cyclic redundancy check ". Please HELP. I need to access the files on the external drive.
 I have connected the drive to a windows XP spk3 and a windows 7 (I thought that perhaps I will not have the error on the windows 7) but I'm getting the same errors.

Can anybody help me?
Please?
Thanks
Colombia1Asked:
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noxchoGlobal Support CoordinatorCommented:
Download Recuva from here: www.recuva.com and see if it can browse the drive.
Another tool you can trial is GetDataBackup by www.runtime.org
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thompsonwirelessCommented:
The drive has failed.  Unless you send it in to a place like Ontrack for data recovery you probably won't ever see your data again.
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noxchoGlobal Support CoordinatorCommented:
Look here: http://www.duxcw.com/yabbse/index.php?board=5;action=display;threadid=12829
Some guys report the problem fixed via CHKDSK /p and then CHKDSK /f
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nobusCommented:
you probably have  a bad drive, but it can be the uusb controller or cable also.
i always take the disk out of the enclosure, and hook it directly to a ide/sata port.
then try to backup what you need.
once you have a backup, you can run a diag on it : http://www.tacktech.com/display.cfm?ttid=287      

in many cases, this helps repairing disk problems (not free) : http://www.dposoft.net/
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bright12Commented:
My guess is that the drive is indeed 'dead'. Meaning that there are to many bad sectors on the drive. I strongly suggest to copy all the files to another drive.

If you want to send the drive to a data recovery centre, like I365, you need to be aware that the costs are very high.
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Colombia1Author Commented:
Thanks for all your responses.
noxcho,
I used the  CHKDSK but it found too many unredeable files, I'm in the process of using "getdataback" but I'm getting errors also.

bright12, thats for your reply but I can't copy the files because I can't see them. If by any chance do you know how can I get into the files so I can copy them, I will appreciate the input.
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thompsonwirelessCommented:
You cannot copy files if you can't access them.  If your drive is bad, sectors are bad, tables are probably bad if it's FAT, etc.  You probably won't see your data unless you send your HDD to a place such as Ontrack where your data can possibly be recovered.
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nobusCommented:
try my suggestion..HDD regenerator helped me before..
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noxchoGlobal Support CoordinatorCommented:
You get errors with GDB but does it see files or structures of folders on this drive?
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Colombia1Author Commented:
noxcho,
It doesn't see the files or structures of folders. So, am I in BIG TROUBLES? The drive was saving a lot of old corporate data.
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noxchoGlobal Support CoordinatorCommented:
Yes, looks like you are. Is the data really worth of paying several hundreds dollars for it?
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Colombia1Author Commented:
We'll I spoke to the getdatabackup's support regarding the errors and they recommeded also to take the external drive out of the case and connected to the computer as an internal drive and do the scanning again. So. I'll be doing that this weekend and I'll let you know.
Thank you
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nobusCommented:
that is what i suggested from the start..and hdd Regenerator can help too..
but report first the result !
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bright12Commented:
I agree with noxcho from the first responce of him. Try recuva, I tried this with an external drive and it worked OK.
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Colombia1Author Commented:
Well, unfortunately my drive is completely dead.
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nobusCommented:
did youn try HDD regenerator (free trial ) ?
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