finley262 wrote:
MacBook Pro won’t boot up and shows multiple errors i.e circle with a line through it and folder with a question mark. In single user mode and safe mode I’m greeted with error loading kernel 0x6. Tried different hard drives and SATA cables but no luck.
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment
Make an appointment for a "hardware issue"—
https://www.apple.com/retail/geniusbar/
Outside the USA
https://locate.apple.com/country
if these were bootable clones the different hard drives, different SATA cable would make it seem some logic board issue not a drive issue.
You can see if it is the same result trying to boot to Internet Recovery— Option Command R
Recovery - https://support.apple.com/en-us/HT204904
You can try the user Diagnostic...not as definitive as Apple's own AST2 (Apple Service Toolkit) back bench diagnostic, but may kick out an error code.
Use Apple Diagnostics to test your Mac
https://support.apple.com/en-us/HT202731