11-30-2014, 06:26 PM
• My iMac: Mid 2010 27" i7 with external SSD Yosemite startup drive, 12GB memory. I turn it off at night and restart in the morning.
The last few days I've been getting a blank white startup screen on both monitors. I get the Apple logo but when the progress bar gets to about 33%, everything goes white and freezes. A restart, or sometimes two restarts, usually works and things seem normal. At least most of the time - yesterday after startup, the fan started running loud until I restarted - on two different occasions.
A few days earlier, all my applications were crashing when I launched them. Calendar (one of my startup apps) opened with an Apple failure report. I've also had a few times when my desktop background image was jet black (icons and curser worked normally). Restarting usually fixed these problem. I've run disk utility and everything seems to OK.
Yesterday I booted off the internal stock drive and used it most of the day without problems, except the SSD was missing until I shut down, disconnected and reconnected the firewire cable. When I restarted off the SSD, everything worked great with no problems. The white screen was back this morning.
These problems seem to start about a week ago when I removed my 7 year old Buffalo router (my internet connection was 3x faster without it). I've got a new Asus dual band router that seems to be working fine.
This has been a very stable machine. Any suggestions on what the problem is and how I could fix it?
TIA
The last few days I've been getting a blank white startup screen on both monitors. I get the Apple logo but when the progress bar gets to about 33%, everything goes white and freezes. A restart, or sometimes two restarts, usually works and things seem normal. At least most of the time - yesterday after startup, the fan started running loud until I restarted - on two different occasions.
A few days earlier, all my applications were crashing when I launched them. Calendar (one of my startup apps) opened with an Apple failure report. I've also had a few times when my desktop background image was jet black (icons and curser worked normally). Restarting usually fixed these problem. I've run disk utility and everything seems to OK.
Yesterday I booted off the internal stock drive and used it most of the day without problems, except the SSD was missing until I shut down, disconnected and reconnected the firewire cable. When I restarted off the SSD, everything worked great with no problems. The white screen was back this morning.
These problems seem to start about a week ago when I removed my 7 year old Buffalo router (my internet connection was 3x faster without it). I've got a new Asus dual band router that seems to be working fine.
This has been a very stable machine. Any suggestions on what the problem is and how I could fix it?
TIA
northern california coast