I'd contact the manufacturer
I'd try booting from a flash drive to see if that will work. You can make a bootable Ubuntu flash drive and try to boot from it. I suspect that in playing around with Joli OS, you somehow inadvertently wiped out something on the hard drive and your motherboard is OK. Any flash drive should work as long as it will hold 2 GB or more. If you can boot from the flash drive, you should contact your netbook's manufacturer to get the media needed to restore it to factory settings.