Hi there and welcome
What exactly happens when it logs out? What message do you get?
Before we jump to that action, there are a few things first to rule out, starting with issues on the hard disk
Power off the mac
Then start the Mac and hold down the Command and R keys at startup.
Hold these keys until the Apple logo appears. After your computer finishes starting up, you should see a desktop with an OS X menu bar and an OS X Utilities window
choose Disk Utility from the Utilities window, or from the Installer menu if you're started from an installation disc.
Click the First Aid tab.
Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
Select your Startup Disk (usually named "Macintosh HD").
Click Repair. Disk Utility checks and repairs the disk.
Let this complete and when it has, tell me if you still have the problem please.
Ca you do the following please
Then tell me if it remains in the profile or logs out please
The opt key will have Opt or Option on it if not then it is the left ALT key
If you hear no startup then hold it from the moment you turn it on
ok, but you heard it twice? As per the instructions as 1 minute is very short for this to happen.
just to be sure please
ok, in Safe mode it stays logged in right?
ok, and if so, what was the last program you installed?
ok, you can Go to System Profile and select Software from the left-hand side bar. Click on Logs. In the panel of the main window you can click on "install.log" to see the history.
If it is Chrome, uninstall (trash) it, restart and tell me if it then works please
ok, to be sure though that chrome was last, Go to System Profile and select Software from the left-hand side bar. Click on Logs. In the panel of the main window you can click on "install.log" to see the history.
go to Finder, Applications, Utilities and you will see it there.
Sorry yes, it is referred to as the System Profiler
No sorry, the only option left is a reinstall, we have exhausted all other options.
Copy any data off the mac you need to keep. This should not touch it but it is best to be safe
Programs you will need to install again.
There choose to reinstall the Operating System
Once done, set it up and tell me how it operates please
Did you reload the OSX?
you have to, it is the only option left, everything else has been ruled out
you mean now you know the answer you wish to have a refund in order not to pay for it?
We had to eliminate all causes for this first, and in most cases it would have resolved it rather then just guess based on "many websites"
Ill organize a refund.