mac mini hangs on startup

My mac mini hangs on start up -everything ok till this week - apple logo, grey screen, spinning wheel goes on for ever - however I can get into the machine on the network from my imac to look at files in the mac mini, but cannot get in via screen sharing.

tried pressing c on startup also tried shift but nothing changes
chaddy1Asked:
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jhyieslaCommented:
Try this first.

Reset the system controller by powering it down and removing all cables (power, USB...all cables) and leave them out for one minute.

Then plug everything back in and boot...

If this doesn't work, try resetting the PRAM

http://support.apple.com/kb/HT1379


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strungCommented:
Will it boot from the System CD if you boot while holding down the c key?

If so, pull down the Disk Utility menu and run Repair Disk.
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andyringCommented:
OK, so it will turn on but not get past the spinning gearwheel while starting up?  But you can get to it via the network?

Interesting.  Not seen that combination before.  But, try this:

When you power on the computer, hold down command-V on your keyboard.  This will boot into what's called "verbose" mode.  It'll basically boot with all text on the screen, and will likely "hang" at a point where it'll give you some information we can go on.  Give that a try and let me know what you get.


-Andy
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chaddy1Author Commented:
thanks for the help guys, i finally managed to boot from the original discs and carried out a full erase and restore. software updated and all seems ok up to now......
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chaddy1Author Commented:
thanks for your prompt suggestions
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