PSU is fried, is my i7 and motherboard fried as well?

villain_

Honorable
Feb 10, 2014
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10,510
My build is i7 4770k
Asus Z87A
8Gb ram
Inland ILG-750E PSU
On first power up one of the EATX 8 pin cables melted. What is the likelihood of the motherboard and cpu being fried as well?
To be specific it was the top ground wire on the 8 pin that melted.