HDD shows "Import failed" in Disk Management

Hello, my name is AmalM and I'm new here.

I have two internal HDDs. One is a Samsung and the other is a Western Digital Caviar.
The WDC has the problem. There were three partitions in it. One day when I turned on my PC, I couldn't see any of those partitions in "My Computer". It's detected in both BIOS and Disk Management. When I checked Disk Management, it showed "Error".

So I download Western Digital Data LifeGuard Diagnostics and checked my HDD. Quick test failed:



And the Extended search said that there are some bad sectors and asked me to fix it. I pressed Ok. And when I went to Disk Management again, it says " Import failed" :



And then I used TestDisk:




Here it shows my lost three partitions.
I pressed p and I could see all my files. So, I thought there's some hope and I came here:



Here, I selected "write" option and pressed y:

And this message showed:



Please help me fix that drive. 3/4 of my files are in it. Please help me.
I think it happened because one of the wires to the HDD was loose. I fixed it now. I changed the wires.
If you need any more details from me, please reply.
Please help me.

Oh my god!
When I right clicked the Disk and clicked "Offline" in Disk Management, it showed some error but the partitions are now back:

But one partition is still missing. And you can see it as "Unallocated space" in Disk Management. How do I recover it?
Anyway, I got these 2 partitions. Now, I'm confident that I'll get the other one too. Thank god.

EDIT: The partitions which came back are now shown as Read-only. How do I change it to Read/Write?
I still need help. Please help me.

EDIT: The last partition also came back after I rebooted my PC. Now the only problem is that these partitions are Read-Only. How do I change it to Read/Write? Please help me.

SOLVED

Everything's fine now. I'm so happy that I got all my files back.
I tried setting it Offline/Online but didn't work. I don't know how it worked now. Maybe because I run the Extended scan and recovered the bad sectors from the Western Digital Data LifeGuard Diagnosticss tool.
Also, I fixed the Read-only error with the help of this link: Hard drive Locked as Read-Only - Microsoft Community

Thank you.

I am glad you got it sorted out and thanks for the running updates.