Computer Hope

Software => Apple => Topic started by: Becca2010 on August 29, 2010, 11:56:14 AM

Title: White screen when turning on iMac
Post by: Becca2010 on August 29, 2010, 11:56:14 AM

When I turn on my iMac, all I am getting is a completely white screen. There is no home page. I have a 2007 iMac.

Title: Re: White screen when turning on iMac
Post by: agreimann on August 30, 2010, 10:48:48 AM

If this is right after or before the chime, you have a firmware or hardware problem that needs to be serviced by Apple(r).

Title: Re: White screen when turning on iMac
Post by: OpenSource on October 07, 2010, 09:18:47 PM

I would reset the PRAM by holding down the command-option-p-r keys while the computer is off then turn it on while holding those keys down.  When you hear the startup chime after the 1st time, it is ok to let go.

If that doesn't work, reseat your RAM (unplug your computer then physically take the RAM out of the computer and put it back in).  Then after that try known good RAM.  If the problem continues, take it in to your applecare specialist before replacing your logic board.