amd graphics problem

For the past 8 years I have owned a 15" 2011 macbook pro, and have been extremely happy with it. In fact, with a nice SSD, upgraded RAM, and a twice-replaced discrete AMD GPU, it's still really snappy. Unfortunately, I have started getting the dreaded signs of GPU failure again -- at the moment...

Hey folks, i just got a very good deal on a "Sapphire Nitro+ Radeon RX 580 4GB GDDR5". I bought it in order to upgrade my Mac Pro 5.1 (Late 2009) GPU from the old crappy GT120. Unfortunately the card won't show up a boot screen. I've read some posts about the RX 580 Pulse Upgrade and hope that...

Hello MacRumors, you beautiful bunch of clever minds. My early 2011 MBpro died suddenly last night, now it turns on (blue light on the right hand side of the keyboard comes on) but the screen remains blank and doesn't get to the boot noise or boot. I am hoping to be able to pick the...

I'm hoping some of you gurus can give me a bit of direction here - I am not completely useless with Macs, but I am far from an expert so please forgive me if I am missing anything obvious. I have had this nasty problem when my 2011 MBP 15 starts up where I get 'thin red horizontal lines' on the...