Donnaclus
Level 1
(4 points)
Q: Empty gray screen on wake?
So I've been using this Mac mini (Late 2014, 2.6 GHz Core i5, 8 GB Memory, 1 TB HDD, OS X El Capitan 10.11.6) for almost a year now and I'm having a serious problem with waking up from sleep recently. If I let it sleep long enough, I get a gray screen on wake. No progress bars either, and it can go up to half an hour without doing anything. I disabled hibernation using pmset just in case, and the problem still happens. This has happened 3-4 times so far.
Incidentally, pressing certain buttons on the gray screen gives a system error sound. I'm not sure if that means it's a problem with OS X or not, but I'd wager it is, as I ran Apple Diagnostics and it showed that there are no are no hardware issues. I'm really confused now. Has anyone else ever experienced this?
lllaass
Level 10
(187,512 points)
- Try resetting the SMC and NVRAM/PRAM (it appears you did one of these already)
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
https://support.apple.com/en-us/HT201262
- Boot to Recovery and repair the startup disk
OS X: About OS X Recovery - Apple Support
https://support.apple.com/en-us/HT201314
- If it is repairable reinstall the OSX
How to reinstall OS X on your Mac - Apple Support
https://support.apple.com/en-us/HT204904
- If you do not have a backup use disk utility to restore the internal disk to an external disk so you can try to recover data.
Then format the startup disk and do a fresh install of OSX
