Q: Screen Freeze at startup Grey Vertical Lines
Guys and Gals-
I've tried to find the solution in the discussions but can't find anything that matches exactly whats going on...
My G5 Mac Pro, OS X Mavericks (10.9.5), 2.4_8CX/6x1G/5770/1TB/SD Although I have El Capiton now and I believe mine is actually a PowerMacPro Tall steel desktop, today seems to be doing something wrong. I was downloading a large file from a vendor online and also backing up iPhone 6S at the same time. Coincidentally or not, it restarted after an update timeout on the iPhone and now will only display grey and white vertical lines on the monitor at startup, no apple no swirly just grey and white lines. (I just had the HD replaced last year at Apple Store) The fan is just running on high while I wait and stare at the grey lines.
What is wrong?
What are some tests I can run?
How do I do an alternate startup again?
I am not totally computer dumb but can do enough technically to survive.
Any help is appreciated, thanks in advance.
Nick
Mac Pro (Mid 2010), OS X El Capitan (10.11.6), 2.4_8CX/6x1G/5770/1TB/SD
Posted on Sep 23, 2016 8:22 AM