ubuntu live cd+intel motherboard+western digital hardrive = hard not detected help

ok so i used a ubuntu live cd on my dell desktop and it has a intel motherboard and a western digital hard drive in it, so one day my version of linux had a grub error and so i put in a ubuntu live cd, well it failed to be live at all in fact it showed a dead ubuntu logo, and so after i took out the cd and restarted my computer, my coputer could not find my hard drive even after i reinstalled linux,

i really don't know how to fix this so if anyone else knows how to fix this please tell me,

(also i just found the video card for it so i came here because i wanted to test xonotic on the computer)

I know it probably isn't the issue, but if you have a dodgy SATA/IDE cable going into your harddrive, it might be the issue. Just wiggle around the power and data cables and make sure they fit

Also, if you just had a GRUB error out of the blue, there may be something wrong with the disk itself, but that's just speculation. Also, try reinstalling GRUB, as that may be the issue.

well if i recall right i had done a file system check and after the check and fixs i had a grub error,

and also i put in a windows 98 hard drive and it started just fine

and also i already reinstalled linux, and the hard drive still works because the hard drive works on my old emachine