Question: Mac will not boot using bootable usb or any other command startup option
I have been working on my laptop for the past 48 hours straight(almost). The problem is the OS X recovery. Back at the end of January I decided (dumb) to upgrade my MacBook Pro(late 2011 15") to High Sierra OS and from then on it went downhill. First I was able to log onto my Mac with no issues, then the lag started to kick in, next the computer would shut off on its own, afterwards I was able to use the command startups in order for me to gain access to my login screen. I would have to use different command startups every time until my Mac just had enough and now none of the command startups work at all! My last resort was to create a bootable USB drive from a MacBook Pro (early 2015 13") who is running the Sierra OS. The creation of the drive was successful, I plugged my USB drive in, the Mac recognized the drive from the startup manager, the progress bar loads about 75% of the way and Nothing! The screen either goes black and then flashes to grey and shuts off or the screen may turn blue or grey with lines forming horizontal across the screen. At one point I used to get the censor symbol in the middle of the screen during the boot process. I feel like I exhausted all options before I either have to take it to Apple. I am righting this post to see if I have maybe missed another option that could possibly save this disaster, but believe me when I tell you I have tried almost everything it is not an exaggeration, just a bunch of frustration. Thanks for any suggestions!
MacBook Pro, macOS Sierra (10.12.6)