USB Stuck with Write Protection

[wargigas]

I was doing a system backup onto my PNY Attache 64gb thumb drive when the backup failed and stuck 50gbs of junk on my drive. I tried to delete the files to restart but it was all of a sudden write protected and now the files are stuck. I've tried everything:

First, there is no Write Protection switch on the drive itself.
I made sure the Sharing options allowed full control (for the drive and C: drive)
I tried removing the Read Only designation from the individual files
I tried reformatting from the thumb drive, my computer and through command prompts
I tried removing the readonly status through command promp's disk list
I tried the regedit StorageDevicePolicies (my computer didn't have this folder but I added it with the WriteProtect DWORD set to 0)
I did a Malwarebytes and Norton virus scan
I tried downloading the Windows 7 USB hotfix but none of them were applicable to my system after trying to install them

So far, no change, no improvement. Either nothing happens or I get the write protection error.

Any further suggestions would be much appreciated. Thanks.

 

[Blaise170]

If you can still copy files from it, copy the important files over to your PC. Then proceed with a full format. The formatting should remove write protection.

I doubt this is the case, but there may also be a switch on your USB.

 

[wargigas]

Thank you, but as I posted, both of those options were tried unsuccessfully.

 

[Blaise170]

Oh sorry, didn't see that, I should probably go to bed.

You could try reformatting through a Linux live CD if you are up for it.