It might be it's scheduled and will be executed on reboot. Nothing happens indeed when you click it.
If not, boot from the Windows disk into the recovery console or startup repair (depending on your OS, you didn't tell) and run the chkdsk from there.
When I try to do a system restore, I am getting am error message of: The disk HP (C:) has errors. Windows has detected file system corruption on HP (C:). You must check the disk for errors before it can be restored.. When I check the disk for errors, I get the message that Windows can't check the disk while it's in use. Do you want to check the hard disk errors the next time you start your computer? When I click on Schedule disk check, nothing happens. Can someone please help me? Thank you in advance.