If the VS-2400CD loads directly to the "Setup Drive" window and will not load any projects, the hard drive may be fragmented.
First try turning off the VS-2400CD and then back on again a few times. If the projects eventually load, immediately backup and then format the fragmented drive:
VS-2400CD: Resolving a Fragmented Hard Drive
If the projects still do not load, there are two options:
VS-2000CD, VS-2400CD, VS-2480: Recorder Locks Up when Loading or Saving
If the problem continues, the hard drive may need to be replaced:
VS-2400CD: Where Can I Find a Replacement Hard Drive
Note that due safety and liability reasons and the age of the product, we don't have instructions regarding how to replace a hard drive or where to purchase a new one.