I'm not Tim, but you should hear the Mac reboot and chime over and over as long as you hold down these keys. If it seems to be booting up regularly then you missed to window of opportunity. Most stuff says to keep holding down the parameter ram reset keys until you hear 3-5 startup chimes.

CB

On 1/11/12 2:53 AM, Les Kriegler wrote:
Tim how does one know if the procedure actually worked when executing all of these keystrokes in a short time period? Thanks.

Les
On Jan 10, 2012, at 9:22 PM, Tim Kilburn wrote:

Hi,

You don't actually need the keys down when you turn on the power button. Simply press the power button, quickly get your hands/fingers in place, then press the cmd+option+"p"+"r" as the startup chime sounds.

HTH

Later...

On 2012-01-10, at 5:57 PM, Red.Falcon wrote:

Hi there!
I was wondering how to do this with a Imac!
If you have to hold down the keys and then press the power button its a bit tricky with the power button on the back of the Imac!
Any tips?
Colin

On 11 Jan 2012, at 00:25, Tim Kilburn wrote:

Hi,

It's not VO+p+r, it is cmd-+option+p+r. I usually use my left thumb across the cmd and option keys then my left index and right pinky for the "r" and "p" respectively. What it does is clears out your memory so that any residual stuff that has, for whatever reason, remained clogging up your memory, is sent off into la la land. This process helps quite often when Macs are behaving erratically. It is also suggested by Apple as a "next step" in certain troubleshooting situations. For example, the "Restart" is suggested first then the "Clear PRAM" next, when troubleshooting power issues.

HTH.

Later...

On 2012-01-10, at 10:12 AM, Ray Foret Jr wrote:

Never heard of that procedure before. VO+P+r? That would be interesting to do with only one control key on the left side.

Just what exactly does that sequence do when used as you describe?


Sincerely,
The Constantly Barefooted Ray!!!

Now a very proud and happy Mac user!!!

Skype name:
barefootedray

Facebook:
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On Jan 10, 2012, at 12:35 AM, Anne Robertson wrote:

Hello Richard,

One thing that hasn't yet been suggested is initialising the PRAM. To do this, shut down your machine, then hold down the Command, Option, letter P and letter R keys and press the Power key. Keep holding down the four keys until you've heard the start up chime at least 3 times. Then release them and the machine will boot as usual.

This procedure can cure all kinds of strange behaviour.

Cheers,

Anne

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