Hey there, Madalin_1.
Would you please post a screenshot of what you see about the drive and its partitions in Disk Management (you can use imgur.com to upload the image). Here's how to access it:
How to access Disk Management in Windows to manage hard drives.
On the other hand if you don't want to wait for me to see the screenshot and post a reply, in the meantime you could try low level formatting (write zeros), to see if that fixes the issue. You could do that either by using DISKPART or the HDD manufacturer's diagnostics tool (most of those tools support low level formatting). If you decide to go with DISKPART here's how to do it:
1. open CMD (Command Prompt) as administrator
2. type in
diskpart and press "enter"
3. type in
list disk and press "enter" (This should list all available disks on your computer) If you don't know which of the listed disks is the HDD, you can identify the device by its size which is shown. If your device does not appear, try
list volume instead. In this case, you'll need to replace the commands below with "volume" wherever it says "disk."
4. Once you are sure which disk is the HDD in question, type:
select disk X (where
X is the number of the HDD) and press "enter". E.g. if the HDD you wish to format is disk 1 you should type
select disk 1
5. After that type:
clean all and wait for the process to finish. Note that this might take quite some time. When the process is completed there should be nothing left on your HDD, so please make sure you've selected the right one.
When you're done, you'll have to initialize, partition and format the drive as if it was a brand new internal HDD. Here's how to do that:
How to initialize or write a signature to a secondary hard drive or Solid State drive in Windows and
How to partition and format a hard drive on Windows and Mac OSX.
Hope that helps. Please let me know how everything goes.
Boogieman_WD