Horizontal bar appears on boot up screen - MacBook Pro Early 2011
I was fortunate enough to have the motherboard on my MacBook Pro Early 2011 replaced by Apple at no charge.
But after a week, I noticed a horizontal bar appears across the screen upon booting up. It only last for a few moments and doesn't appear again while I'm using the MacBook Pro.
I think there's a firmware upgrade I can do for the video card. I found a file on the Apple support page that would do just that.
I'm wondering if there is a way to check if all firmware upgrades have been done on this MacBook Pro or if anyone else has had a similar experience.