Mac not booting up stop sign

We tried changing the password but it makes no difference. My daughter is the administrator so we can log in as her and use the computer but I am unable to access the documents I have under my log in. Please can you advise how to correct this so I can log on or is there a way to access my documents through her account?

Resolve boot issues showing 'prohibitory' sign

I am not that computer literate but have tried searching through the Apple help menus to no avail. Kind Regards Karen.

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Mac repair guy said… oh you saw the kernel panic before the problem? I wasnt aware of what it was called. Now I find out tomorrow how serious the issue I have to pay for is. I still get a grey screen — no logo. One day, it decided not to even give me the POST chime.

macOS Catalina problems: how to fix the most common issues | TechRadar

I said no thanks and went home. This time was no exception. I unplugged everything from the logic board except for the power supply and video connections and hit the power button. Sure enough, I got a chime. Began plugging things back in one at a time until I found the culprit. Turned out to be the hard drive temp sensor.

No expensive logic board replacement, just a little temp sensor board. I sometimes think back and wonder what excuse they would have come up with after a new logic board did nothing to fix the problem. After a week or two new battery is dead. Rather costly to replace battery times a year.

Otherwise this old wind tunnel is working perfectly.

My OSX shows firmware password screen which i have no idea why it started coming up but i can bypass it sometimes by holding cmd-apple-o-f keys but the keyboard doesnt work.. I tried holding down the alt option to choose a different drive to startup from but nothing happens, so I put in a Snow Leopard disk and now it starts up to a screen telling me to change the batteries in my mouse. Have any ideas? My email is namizich gmail.

What is going on? I have a Macbook Pro, It has had a new hard drive now, as the old one died, I also apparently have a new motherboard because there is a generic problem with my competer models boards so this was replaced free of charge. My problem now is that when I turn on my compter it takes ages of just freezes showing a world flashing.

This is made worse If i have the internet connected. If i desonnect the internet I am able to resart my compter and it will eventually startup. I have so much work to do but I can not trust my machine. What s wrong with my computer? That is: the march of extensions happens as normal but it can render the desktop at the next step. Norton finds the Desktop Folder is to blame: damaged resource fork, no fix offered. How can I resolve? If I start from a CD, all data is just there as normal. Hi, I have a quick question and am hoping someone might me able to help?!

I have a MacBook Pro and it is locked with a password. Both times I turned the computer off and it flashed really bright and made a clinking noise.

How To Fix Mac White Screen

I turned it on later and it worked fine. If not, is there anyway to turn off the computer more safely? I recently tried to change the permissions on the main OS drive where you click get info and allow everyone to read and write and I applied it to all enclosed items…what happened was a series of windows saying such and such software was improperly installed please reinstall it…. I had to click ok for 2 straight minutes… so I tried repairing disk permissions while it was still running…it would just kick up the same windows as mentioned above and stall the permissions task… so I tried to restart the computer….

I have not successfully got safe boot working, once it gets past the loading bar it goes to staying on the gray logo screen forever…. Is my only hope reinstalling the OS and losing all my data? Would upgrading to the latest OS help? Today in Apple history: iMac G3 arrives to save Apple. Healthy recipes prove easy with this meal-planning app [Deals]. Apple Card is as friendly as a credit card can be [Review]. How-To Top stories Clues to the causes of Mac startup problems can be found by analyzing when in the boot process the system fails.

Leave a comment. Phoenixfix87 says:. March 9, at am. Nick amizich says:. March 25, at am. Tandmonthelake says:. April 6, at pm. Mily says:. April 12, at am.

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2. Run a Power Cycle

February 25, at pm. You might be sur The system can become corrupted from any number of things.