In the image in your first post you can try ticking the box next to the HDD then clicking the 'Rebuild all data' button. Sometimes the recording database can becoming corrupted and it appears to not be recording with the history missing, so try that first. It takes some time. If that doesn't work from the same page you can try to initialise the disk. Unfortunately if the disk is knackered and has a bad sector the initialise operation will not complete and will freeze.
HDD replacement is easy. Power down, lid off, swap disk, lid on, power up, initialise from the page you've shown. Done in less than 10 mins.