I have a 32 GB Flash Drive (Originally a FAT32 but recently changed to NTFS right before it stopped working) that I purchased in February of this year. Everything was working fine until I plugged it in 3 days ago and my computer, an HP Pavilion dv7 - Win 7 64x, would not recognize it. It was completely random because no changes were made to my computer recently, though, it is up to date.
I've tried EVERYTHING I can find on Google. Sometimes I'll get lucky and the Windows format option will pop-up and I format it, then right-click on the drive, select Properties, and click error checking. I've done both options multiple times including 'Scan for and attempt to recover bad sectors' which does successfully fix my drive.......temporarily. If I unplug it (by correctly ejecting it, which I always do) then it will decide on it's own if it wants to be recognized. If I try to put any size and/or type of file on the drive, then it will stop at an unspecified time through the process and give me some sort of error saying it cannot copy the file because the specified path file does not exist. Something like that.
I've tried Disk Management and renaming the letter for the drive then formatting. No effect. Uninstalling the drivers through the Device Manager, restarting, then inserting the USB back into to re-install them. No effect again. Multiple HDD programs that I've seen suggested online (such as Seagate, HP USB, or MBRFIX) but none work or sometimes won't even recognize the drive. The most success I've had (I guess) is from Diskpart. I found a thread where someone gave a thorough list of commands to try if the simple Clean>Create Partition>Format operation didn't succeed but none of the options worked. I kept getting messages like 'access denied' or 'system file path not found'. When I use the command 'List Volume' I've seen the status say healthy the first time I used Diskpart but now it says unusable.
I really want to fix it if I'm able to, so any help will be greatly appreciated. If you need more info or screenshots, I will reply promptly.