New
#11
I had just put a new DVD RW drive in my second PC a little bit ago and ran into the same exact situation. Booting issues and I was going mad. Checked every wire, did not find anything loose or what not. Unplugged both hdd and dvd drives power and sata cables. Put them back and it worked. Must have 'bumped' the hdd wire when plugging up the dvd lol. The irony of both of us having the same issue today lol.
Now, that must've been frustrating
I'm glad that you figured it out!