MacBook go to black screen after sleep, must restart, why?
Recently my MacBook Unibody (late 2011) SolidState Harddrive, 2.66 processor, 8GB DRAM has started to go into black screen after sleep and won't wake unless I do a hard shutdown. I changed the ram when I bought the unit to upgrade to 8GB.
But when I go into 'about this mac it says this:
Memory Slots:
ECC: Disabled
BANK 0/DIMM0:
Size: 4 GB
Type: DDR3
Speed: 1067 MHz
Status: OK
Manufacturer: 0x0198
Part Number: 0x393930353432382D3030352E4130324C4620
Serial Number: 0x4D389DCF
BANK 1/DIMM0:
Size: Empty
Type: Empty
Speed: Empty
Status: Empty
Manufacturer: Empty
Part Number: Empty
Serial Number: Empty
Does that mean one has failed? And is that why it goes to black?
Or am I looking in the wrong place?
Thanks a million!
//Lin
Is this a good question?