Kernel panics are terrifying errors where the kernel doesn’t hang at boot, it panics. This results in a rather frighting screen shown below.
If this happens, then you have a very serious problem. However, it may be fixable. The main reasons for this happening are incompatible CPU’s and Bios settings, incompatible graphics or DSDT/config.plist errors. In this case, you’d want to double check all your components and settings. Googling ‘[part name] Hackintosh’ is generally a good start.
If you narrow it down to graphics card issues, you may want to do the initial installation on integrated graphics. You can then add and debug the graphics card later.
Should your machine kernel panic after booting for a while, you may have an issue with a higher function. If this is the case, you should see some grey text output behind the kernel panic dialogue. This is like a verbose output. You can use it to figure out what went wrong. If you cannot make heads or tails of the output or do not have the experience to understand it, Googling each line could provide you with an answer if it is a common problem.