How do I test is a hard drive is good?

My computer got struck by lightning and didnt power on. I changed the motherboard and now it powers on but comes to a windows repair window & wont let me through that so I am figuring the hard drive got toasted?

If this computer has 2 harddrives how do I know which one is bad or if both are bad?

I have no put the motherboard cd in yet

This post was edited by drew2128 on Nov 27 2016 11:38am

HD tune.

run bench marks post screen shot.
do an error scan (not quick scan)

run on both drives

I cant get past the repair screen on windows.

Do you have another computer you can put the HDD into...to test it?

or try one drive at a time then change cables.
Also if windows repair doesn't work could just be corrupted os and nothing with the drive just format it.

Use a pickup coil and take a recording of the drive.

You can tell if the drive has physical damage 90% of the time by the way it sounds.