Hi guys! Apologies in advance if there's already a thread on this, but I did search here, and via Google's "macbook pro 2013 freeze site:forums.macrumors.com/" but found nothing that matches. Anyway, I have a 15 inch MacBook Pro retina, 512 gigabyte SSD, 16 gigabytes of RAM, and the NVIDIA GeForce GT 750M. Amazing, in a word. However, all is not quite green and pleasant. After moving the data across from my 2009 15 inch MacBook Pro, via Time Machine, I launched Photoshop CS6, which caused the entire machine to freeze as Photoshop hit the colour palettes initialisation in the splash screen. Now, I realise that Photoshop CS6 isn’t supported under Mavericks, but that shouldn’t cause a whole system freeze. Fast forward to a couple of days later, I’m in Google Chrome, I open the Developer Tools split window and it becomes momentarily blank, then there’s a few visual stutters before the clock freezes, the keyboard becomes unresponsive, followed by the pointer vanishing. Strangely, the music in iTunes carried on playing. Fast forward again by about a week of happy computing, where I hop out of my seat and flick the mouse pointer into the top left corner to make the display go blank. On my return, the display isn’t blank, which happens sometimes if I don’t hit the corner. But then I noticed the clock had frozen, along with the keyboard, yet the pointer remained active. So, having read up on the problems people had been experiencing with their own brand new MacBook Pro’s running Mavericks — though mostly the 13 inch model — I decided to sleep the computer for a few minutes to see if that fixed things. When I returned, the display was now black, although the pointer remained visible, though no amount of key pressing or trackpad clicking would make the computer wake up. Also, the notifications tray icon was grey, which I found odd. I am no expert, but all three activities appear to have some graphical component to them. Yes, everything we do with a computer is graphical, but if you follow the logic (such that it is, given I’m no expert), we have colour palettes, window drawing, and sleeping the display. Keep in mind my MacBook Pro has two graphics processors: the NVIDIA GeForce GT 750M and the Intel Iris Pro. Any advice would be great, because I’m more than a little concerned that at some point I’m going to lose data, if I haven’t already, which is a major problem for me — perhaps more than most, though not to diminish anyone else — given that I’m a developer.