HP Elitebook 840 G1 Catalina Trouble

I am trying to install Catalina on my Elitebook 840 G1 but the Apple Logo progress bar fills but will not open to the installer. Below is a picture for the furthest I’ve made it. Everything is vanilla and I used Unibeast to create the bootable usb. The Elitebook 840 G1 has i7 4500u. Any help appreciated.

https://i.imgur.com/Mc6RZbv.jpg

submitted by /u/zman_74
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