What are the signs a hard drive gives when it is about to crash?

My laptop is about 4 years old and I have defragmented and run Scan Disk. My hard drive light is almost always blinking as if the hard drive is working even when the computer is idle. It never used to do this before. I did a quick restore to restore the operating system and all the software that came originally with the computer hoping this would solve the problem, but it didn't. The hard drive light seems to always be on as if the hard drive is busy doing something and the computer is responding very slugishly. I have run antivirus, spyware removal, registry cleaner, adware remover etc. The problem has not gone away. Any suggestions or answers to what this problem could be due to? My computer also seemed to run a bit hot the other day (resulting in computer shutting off), even when on Chill Pad. Thank you in advance.

What are the signs a hard drive gives when it is about to crash?spyware remove

It's had a good life.

You've done all the correct houskeeping to reduce stress.

Try HDD Health - see link.

If you get another 6 months be grareful.

Back it up immediately and often.

When they go it's sudden death.

Good luck

What are the signs a hard drive gives when it is about to crash?virus protection

Try to re-install a fresh OS ...

But make sure you backup 1st ...

Some do it every year ...
Goin'! Goin'! Gone! If you have any useful data on this drive, back it up now and get a new drive. You missed the bad block/sectors report from chkdsk. You might also want to do a memory check before installing new drive. Bad memory crashes drives.
this problem is happening if there hard drive cluster is bad .. just try to format the hard disk with 98 or DOS bootable disk and reinstall the OS .