NemanjaOS

Q: startup options not working

I have a Macbook pro 2010 model, running OS X Yosemite.

 

The only "startup options" (startup key combinations) that work are:

1. Option = Startup Manager

2. Command-S = Single-User Mode

3. Command-V = Verbose Mode

4. Shift = Safe Mode

 

The other options do not work, such as:

1. D = Apple Hardware Test or Apple Diagnostics

2. Command-R = OS X Recovery

3. Command-Option-R = OS X Recovery over internet

4. Command-Option-P-R = Reset NVRAM

 

I read somewhere that this may be a firmware issue, and that re-installing OS X could fix the issue.

 

I appreciate any and all help!

MacBook (13-inch Mid 2010), OS X Yosemite (10.10.4), New HDD

Posted on Jul 9, 2015 8:43 PM

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