Best software for checking hard drive

[koolpc]

What is the best, free, software for checking a hard drive?

Mate has a Seagate Hard drive that is not booting etc. I downloaded Seagate tools onto my win 8 PC but i cant get it to run.

Any other software i can try to test the hard drive please? Ta

When he puts his pc on it says to install boot disc etc. I checked the bios but the drive does not show up! Checked boot order and its not there.

Connected it to my pc and i can extract files off of it. Is it kaput?

 

[koolpc]

The drive used to be part of a raid but the other drive failed a couple of months ago. Looks like this one may be going the same way?

 

[koolpc]

You tried the HDD in a diff PC's or off the raid controller? Seem's off that two drives from the same raid have died in that timeframe?

Cant try the drive in a different PC. Only connected it to my laptop of which i can extract data files etc.

The other drive that was in raid with it failed the same way. Strange i know. Dont know what else to do!

 

[koolpc]

I will give those a go. Ta

Could it also be a motherboard issue?