Drive boots multiple times when internal but once from USB
I have a problem with my 2011 Mac Mini, High Sierra.
When I use my drive as an internal drive, my Mac needs to reboot multiple times (1-3 mostly), but when I use the same drive and use it as an external via USB it boots just once.
Multiple boot-ups only happen from a cold boot up. Once it goes to the login screen and I log in, turn in off, and then on again, it boot ups normally.
I have reset pram, SMC, and all that stuff.
I reinstalled my os multiple times now. Now I will try to install it fresh from the bootable drive.
Also, I have swapped the flex cable from the original to a replacement one from aliexpress. I do not have the original one anymore, so I cannot test if it is the problem.
I would really appreciate some help with this matter as I want to sell it but I do not want it to fail a new buyer.
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