Dell Inspiron 1525 Windows Vista 6SP2 32bit, Zone Alarm 9

In the middle of the encryption process my computer crashed. I had to "bring it down dirty". When I fired it back up nothing wants to run. It's either sluggish or it freezes altogether. I backed up before starting encryption to a Tb USB drive. I have the restore point and a file was sent to Checkpoint. I need help. I went on tech chat and was given a phone number to "encryption support" but the connection is horrible and I've been on hold for over 15 minutes and still have yet to hear a person come on the line... just get music (occasionally). I've got a deadline to meet by tomorrow and it has to be done from that machine!! Help!