Chosen Solution

Hello, my Macbook Pro is a Mid 2012 13". The screen is stuck in “grey” though it can connect to my wifi and can charge my phone. The laptop was put on sleep mode for awhile and when I turned it back on, that’s what happened. I already tried all those resets. None worked. :( Update (08/07/2016)

this is what the screen looks like

I hope he didn’t charge you for breaking your system! ;-{ It might be the memory module is not fully seated. Have you ever opened your system before? If you’ve careful you could try reseating them modules. Here’s the IFIXIT guide you’ll need to follow: MacBook Pro 13" Unibody Mid 2010 RAM Replacement. If reseating the modules doesn’t help you’ll need to try using one module at a time to see which slot (or module) is damaged.

Grems, When you start up the computer, hold down the “D” key, that should start it into an Apple hardware Test mode. If that finds an issue, let us know! I’d also be interested to see if it’s seeing any type of Hard disk or if the issue is with the display. When you boot, can you hold the option key down and see if you get any options? From here, it’s possible that your display pins may have come undone or other logic board issues. Let us know once you’ve tried those things!