Hey Guys welcome again to Every PC Solution today I am going to tell how you easily resolve Phoenix OS booting problem So, First step is to check either your PC support Phoenix OS standard Version or not So for this follow this Simple process
How to check PC /Computer support Phoenix OS or not
For this you need to download simple software named CPU-Z. which probably everyone have after that open the software and check for instructions sse4.2 if you see that and still getting detecting android-x86 found at /dev/sda then follow the simple guide but if in your case it is missing then Unfortunately the Phoenix OS does not support your system here is a good news for you. you can still use phoenix OS 32 bit version or modified versions of Phoenix OS if you want to play Games Now lets move on the other solutions
How to Fix Phoenix OS stuck at detecting android x86_64?
You might it sound as its tricky to fix it but EPCS is here to help first you have to verify that the ISO or RAR File that is downloaded is ok and is not corrupted just check it using WinRAR if it is ok then you have to change mesa driver
Change the installation type install it by using Advanced Android x86 installer and see if its work but but in case it won't work for your system try using other versions and also it might be possible that System.img file got corrupted while extracting or for any reason like while downloading on a poor connection