HDD sounds while copying and pasting :(

Hello. Today (as other days) i'm was working on my PC. so i'm was copying a 1gb folder to somewhere. after 20%. the transfer rate goes to 0.00mb/s . umm what ? so i tried to copy it again. Same thing. sometimes. the PC freezes. i tried to install a HDD testing and monitoring Tool. I installed it and it's Hard Drive Sentiel. so i self tested it. and the health was 60%. uhhhh what !? and not that ! the hdd yesterday's health was 62%. after one day. it became 60%! so how i can fix this problem !? i will replace the IDE cable later. PLEASE GUYS HOW I CAN FIX IT ! AND WILL IT FAIL !? BECAUSE THIS HDD GOT SO MANY IMPORTANT DATA. working. 3D models. and so many things. So please. give me a solve. Got no money...

I agree, the drive is dying.
How can you have so important data and you don't have a backup?

When the PC freezes, did you check on the led for HDD, is it blinking, stable, or no light.

In this way, you can see if it is still running.

HDD is one of the problem, but you should also check on the source HDD running or not, also target HDD.
If the light flicking /blinking, this is said to be it is reading from the source HDD.
If the light is stable, this is writing to the HDD.

So you need to check and confirm which HDD may cause it to failed.

While you are transferring the data, look at the process on the dialog box on the rate of transfer.

How, you can do another test to confirm which is the problem.
This time, do not use huge file, take a smaller files.
Do the copy alone, without any other programs running.
If the copying is 0 transfer rate, it may be the target HDD also have problem, that is unable to write.
If the light disappeared, then the source HDD may not able to read anymore, this is the source HDD issue.

To me, this is a best guess situation.
Sometime it may not be much of a reason.
Of course you need to know how old is the both HDD.
If beyond 3 yrs and you are using it daily doing heavy task that you are force them to their max.
This can be said as this 3 yrs HDD may failed anytime.

Next time, try to copy some smaller file size, instead of high storage.
This is because, if the bigh files or total files size is too great, it required time and computer resource.
This is to avoid the danger should at any time, such as freeze, you files may be corrupted easily.
Hence not only the source HDD but also the target HDD.

Just my view. after having destroying too many HDD flash drive, etc.