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NTFS Partition not accessible. "the file or directory is corrupted and unreadable" after BSOD

New (Acronis Disk Director) Partition worked for two days.  Other partition on same hard drive seems fine. Error message appeared after intense  work on different hard drive preparing for windows 7 dual boot install. (NOT on the drive or partition that is now bad). Suddenly I had a black screen, then a reboot.  This invoked Checkdisk, which found some misallocation of files and said it had corrected problem.  Next reboot caused checkdisk to run again.  This time it found no errors, but my attempt to open the new partition gave error: NTFS Partition not accessible. "the file or directory is corrupted and unreadable" .  How can I troubleshoot/access the data?  I'm afraid to mess it up further. Stumped. Thanks.  
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DO NOT USE CHKDSK. If it makes further changes that damage or orphan some files, you may be unable to
get anything usefull off the drive.

First, make a copy of your data. (e.g. Clonezilla)
Then use chkdsk if you wish.

Alternately, you could try Ubuntu to see if it can read the drive. I have had chkdsk go into an infinite recover loop on a drive that Windows showed as RAW but which Ubuntu was able to read without incident, except for a single file that it could not access.
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"try ubuntu" sounds great, but I have no idea how to do that.  Do I have to install a whole new OS? Windows says there is nothing on that partition, no file structure, no volume name, although the chkdisk, which runs on its own everytime I restart, sees lotsa stuff there and sees the right file structure (NTFS) and Volume name.  Chkdsk also says everything is working fine and makes no repairs.  Right.
I cannot get into recovery console because my pass word won't work, but that's another question which I will post right now.  Are there programs out there for my problem that will let me get at the files?  Fortunately, this file is on a  different HD from the OS, so hopefully nothing is being overwritten.  I can try making a true image clone of the drive, if I can get True image to even recognize it.  More ideas?  thanks
Try Ubuntu means download the latest LiveCD .iso from ubuntu.com, burn the CD with the iso image, and boot directly from the CD.

No installation (or change to your system) is required. Once you have Ubuntu booted, you can browse the local disks for whatever files are accessible and then either copy them to a USB or over the network to another system.
As for imaging the drive, Clonezilla is an effective option that also has a LiveCD version.
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acronis delete/undelete did not work. I did stop all fiddling, saved an image, and have recovered most of the data with recovermyfiles.com program.  Most files are unindexed now, so refiling them is dreadful chore. But at least data is there.  Thanks to all.  Olivia