How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Mike Your Own Question
Mike
Mike, Mac Medic
Category: Mac
Satisfied Customers: 8996
Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
25267123
Type Your Mac Question Here...
Mike is online now
A new question is answered every 9 seconds

My Mac Pro was working fine last night, I was watching a

Customer Question

My Mac Pro was working fine last night, I was watching a youtube video. It froze up. I reset. Since then it won't boot correctly so I erased the harddrive and have been doing the osx install. Now I am on the create an account area at the start and the lag is so bad it is taking 30sec to a min to register mouse clicks or typing.
Submitted: 1 year ago.
Category: Mac
Customer: replied 1 year ago.
I am running Mavericks
Expert:  Mike replied 1 year ago.

MacPro or MacBook Pro?

Customer: replied 1 year ago.
Mac Pro desktop
Expert:  Mike replied 1 year ago.

What model year is it? A tower or the new black round one?

Customer: replied 1 year ago.
It's a tower from 2010 I believe
Customer: replied 1 year ago.
The silver ones
Expert:  Mike replied 1 year ago.

OK is there more than one drive in the Machine?

Customer: replied 1 year ago.
No, I took the others out before I reinstalled.
Customer: replied 1 year ago.
It went through to the desktop just now from the registration but the lag is still horrible and every click gives me the spinning wheel.
Expert:  Mike replied 1 year ago.

OK I suggest you do this:

1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
6. Press and hold the Command-Option-P-R keys before the gray screen appears.
7. Hold the keys down until the computer restarts.
8. Release the keys and immediately hold Command - R to boot to Recovery HD. Erase the hard drive again but this time choose Options and move it one notch to the right to zero out data then reinstall.

Customer: replied 1 year ago.
Ok, thank you. I'll give that a try and let you know.
Expert:  Mike replied 1 year ago.

Ok

Customer: replied 1 year ago.
Ok, I did all that and I'm facing the exact same problem.
Expert:  Mike replied 1 year ago.

OK if there were no problems erasing the drive you have some other hardware problem. Hard to diagnose that. Try different keyboard and mouse or the hardware test:

https://support.apple.com/en-us/HT201257

Customer: replied 1 year ago.
Ok, I have been using a different keyboard. I'll try a different mouse.
Expert:  Mike replied 1 year ago.

OK let me know