OS X :: Properly Reset PRAM - Start Up Sound Before Releasing Button

Jul 19, 2009

I understand the steps needed, but how many times should I reset the PRAM and how many times should I here the startup sound (in total) before releasing the buttons?

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MacBook Pro :: How To Reset PRAM/Start Up Sound Loud/Implications?

Jul 9, 2009

I recently purchased a 13" 2.26 stock macbook. It's perfect, screen is good (no scrolling issues or purple blues) with no dead pixels, no slanted keys, and no scratches.

I updated the firmware that addresses the SATA 1.5 issue. After the update, I reset PRAM. I held down the buttons till I heard the second or third startup bong.

Here is where it gets funny.

Now, when I reboot or start up my computer, the start up noise is loud. Even with headphones plugged in and also the volume turned to its lowest setting (even with volume turned off). Eventually, to control the startup noise, I had to install the startupsound program in my system prefs as mentioned on other threads and that has seemed to control the startup sound.

I was wondering, if by resetting the PRAM if I have harmed my computer in any way. Should I be worried about deeper issues with my computer since the startup sound was not previously being affected by reducing the volume to zero with headphones plugged in?

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Hardware :: No Sound And Can't Reset My PRAM?

Jan 20, 2009

I have a 17" Powerbook G4 1.5 GHZ. I lost all sound from one moment to the next. System preferences says Audio output Headphones however no sound from Headphones either. I tried to reset my PRAM, however when I hold down "Option" "Command" "r" and "P" the computer won't restart. The hard drive seems to be stuck at this point and won't go any further. I went to the Apple store and the Genius lost patience and said we should send it out. (I'd rather not)

I have also reset the PMU

Everything else works fine.

I've looked at several other threads and post. Everyone with a sound problem seems to be able to get it resolved with a PRAM reset. However I find nothing on my the problem of not being able to reset..

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OS X V10.7 Lion :: How To Reset PRAM And SMC

Mar 21, 2012

I am running Mac OS Lion (10.7.3) on a 8-core Mac Pro. As I turned on my mac this morning, I found out that I was unable to use my wireless mouse, and also that I couldn't open my bluetooth settings. Apparently, the entire module disappeared from the System Preferences, and when I went to one of the articles on here, I saw that I'm supposed to reset my PRAM and SMC in order to make my bluetooth work again. The problem is, that I don't know what PRAM or SMC are, nor do I know how to reset them.

Mac Pro (Mid 2010), Mac OS X (10.7.3)

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MacBook :: Tried To Reset The NVRAM And The PRAM But Cannot?

Aug 9, 2009

I have already covered these steps:1. I have tried a safe boot. 2. I have tried to reset the NVRAM and the PRAM.3. I have tried to reinstall OSX from the Install Disk.4. I have tried to repair the HD and tried to repair permissions using the Disk Utility. he issue started out as the flashing Apple/Question Mark Folder/"No" sign. I attempted to follow the steps on the Mac Support Forums (ones listed above) and the issue developed into the picture shown.

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MacBook Pro :: It Won't Boot After PRam Reset

Mar 6, 2012

I have a MBP 13inch from 2011

recently i zapped my Pram becuase i was having trouble with a external screen but when I turned it on again the screen when to the grey screen with the apple logo and spinning gear but after 2 hours of wating the screen is still the same. What can i do to get back onto my mac?

Info:MacBookPro, Mac OS X (10.6.8)

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MacBook Pro :: PRAM Reset Not Having Any Effect

Sep 7, 2014

I have inadvertently left my 2011 MBP running with a processor intensive music app running. The battery ran out before i realised.. When i attached the power lead to charge it, the computer automatically restarted without even pressing the power button. The computer had not entered safe sleep mode, presumably because my music software was still running. 

Since then the computer will not ever enter safe sleep when the power runs down. The battery just cuts out each time when it drops to less than 5%, it does not run out at 0% like it usually does.  if it is the logic board battery because i have had this issue a couple of times before but it rectified itself after a few days.  I have checked that safe sleep is enabled which it is, but the computer just cuts out before safe sleep kicks in.

MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.5)

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Power Mac G5 :: Blank CDs Not Mounting -trying To Reset PRAM

Nov 30, 2007

I have tried two different brands of blank CDR in my drive and both times, they fail to mount and in Disk Utility, show up as Sony DVDs (neither of them is a Sony or a DVD), but not writable. I have no problem with media that already has content. I've tried resetting PRAM, but nothing else yet.

Powermac G5
Mac OS X (10.4.10)

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Mac Pro :: SMC And PRAM Reset - Keyboard And Mouse Delay?

Feb 25, 2008

I tried the SMC & PRAM reset. Now, there is a delay in my keyboard and mouse. For example as I am writing this, as I type, I am observing a ~1/4 sec delay between me pressing a key and the GUI registering it. The same with the mouse. I can click-and-hold over say File and move it up and down over subsequent menu items and it the GUI doesn't highlight the menu item unless I slow down the movement.

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OS X :: Reset PRAM For Network - Troubleshooting Steps?

Aug 15, 2010

Can someone explain to me why resetting PRAM on a machine has any effect whatsoever for networking issues? ie; self assigned ip etc. I have noticed this is a common troubleshooting step that a lot of people are recommending for issues related to networking.

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MacBook Pro :: When Do A PRAM Reset They Prompt For Password

Mar 12, 2012

when i do a PRAM reset, they will prompt me for a password or serial, may i know what password or serial is that?

MacBook Pro, Mac OS X (10.7.3)

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OS X V10.7 Lion :: Reset The SMC, PRAM Or Repair Permissions?

Jun 29, 2012

When exactly do you need to reset the SMC, PRAM or repair permissions? 

iMac, Mac OS X (10.7.3), iMac Late 2009

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OS X Mavericks :: MBP Will Unable To Boot WITHOUT PRAM Reset

Aug 22, 2014

Updated to OS X Mavericks last week. Ever since, it has been experiencing boot problems.  

- If I restart my Macbook Pro (2011 13", lowest model), it will sit at the grey screen with apple logo and spinning grey wheel forever. I notice that my HDD is NOT running (no clicking / writing sounds) 

- If I restart with a PRAM reset or holding down option to select Macintosh HD boot, the hard drive starts to run (I can hear it) and it boots successfully... it takes 5+ minutes to boot up. The grey screen with apple logo is presented on my screen for about 4 minutes, then the login screen shows up but I cannot move my mouse or select a login user for 30 seconds. After this, I can log in succesfully. 

-Also, switching users takes 1+ minutes. Clicking "switch user" freezes my screen.

Mac Pro

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MacBook Air :: Why Have To Continually Reset PRAM To Boot

Dec 2, 2014

Recently my MacBook Air has failed to wake from sleep mode. The Apple illuminates on the back of the screen casing, but neither the screen nor hard drive actually wakes up. The only way I'm able to use the computer is by forcing a PRAM reset on restart (command-option-P-R). I've had to do this several times in the last two weeks.  

The only things about my MacBook Air that have changed in that time period are: 

- I installed OS Yosemite

- I installed and ran Sophos Anti-Virus 

(The latter was installed to counteract a problem that I was having with my email address having been spoofed and sending spam. Sophos found two bits of malware in email data files and "cleaned" them up.)  

MacBook Air, OS X Yosemite (10.10.1)

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MacBook Pro :: Reset SMC And PRAM - Still No Ability To Auto Sleep

Aug 22, 2010

Today I noticed that my mid 2010 MBP is not automatically sleeping. I ran Apple's extended hardware test, along with TechTools Pro 5 from AppleCare disk. Both passed. Reset the SMC and PRAM. I'm still not able to auto sleep. Is there a way to see what exactly is causing my computer to not automatically sleep? Console messages or something?

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OS X V10.6 Snow Leopard :: Mac Chimes As If PRAM Is Being Reset When Restart

Apr 9, 2012

When I restart my Mac it chimes several times as if the PRAM is being reset. Could this be telling me my internal battery is dead?

Mac Pro, Mac OS X (10.6.8), 8 core 9gb RAM

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OS X :: Attempted To Reset The PRAM On Macpro Running Snow Leopard?

Sep 11, 2009

I attempted to reset the PRAM on my macpro running snow leopard this morning, by rebooting and holding cmd-option-p-r until the apple logo appeared, at which point I released and then machine then rebooted a second time. I went back to the computer about an hour later and it was stuck on the apple logo screen, with no sounds coming from the CPU. I did a hard reboot by holding down the power key and it started up fine. I've never reset the pram before and so I didn't know what I should expect as far as the process being successful, but after an hour stuck on the apple logo I figured it got stuck on something.

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Software :: Can't Reset Pram - Going Straight To Gray Screen And Starts Up?

Feb 25, 2006

I have a G4 MDD Dual 1.42ghz, When I hold down the Command-Option-P-R keys during restart it doesnt do anything. It keeps going straight to the gray screen and starts up. I dont know what to do. Anyone know whats the problem? Also my computer cant wake up from sleep or even go to sleep all the way.

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MacBook Pro :: Firmware Password Will Not Reset - Resetting PRAM Fails

Apr 29, 2012

Firmware password will not reset. Resetting PRAM fails. Resetting NVRAM in Open Firmware fails. Resetting PMU fails.

MacBook Pro, Mac OS X (10.7.3), (MacBook pro 8,1)

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MacBook :: Shuts Down When Unplug Magsafe - Reset PRAM / SMC To No Avail

May 18, 2012

I have tried SMC and PRAM resets, and the issue has not been resolved. My magsafe is lit up with a bright green led. Battery status is "Not Charging." When I unplug the magsafe, the system immediately shuts down. Battery is brand new with only 2 cycles. While I can use the laptop with power connected, this is an issue that needs to be corrected asap, as I use this computer for performances consistently and if the power cord gets removed, I'm not in a good place.

MacBook, Mac OS X (10.6.8)

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Intel Mac :: Startup Tone Lost - SMC And PRAM Reset Done But No Avail

Jun 26, 2012

I lost the startup tone a couple days ago. I repaired permissions, did an SMC and PRAM reset and it makes the tone while doing the PRAM reset but the next time you turn it on it doesn't make a sound.

iMac, Mac OS X (10.6.8), 3.2 GB Dual Core

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MacBook Pro :: Unable To Boot Past Gray Screen - Reset Pram

Jan 8, 2011

My macbook pro won't boot past the grey screen, I've tried reseting PRam, running fsck from single user etc to no avail. All signs would point towards a hard disk failure, but the curious thing is that it sometimes mounts in disk utility when booting from the install CD, so theres a little life left in it yet! I have fairly recent backups of most of my files, but there are a couple I've been working on in the past few days that won't be backed up. So my question is this - is it possible to copy files from my mac HD onto a external drive through the terminal/disk utility while booting from the CD.

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IMac :: LCD Backlight Bleed / Reset The PRAM Which Figured Wouldn't Work?

Sep 13, 2009

So I contacted Apple this morning regarding the LCD Backlight Bleed on my iMac (24", early 2008, 2.8 ghz) They made me reset the PRAM, which I figured wouldn't work, and the issue is still there.

They say it'll have to go in for servicing, and I live nowhere near an Apple Store, so they gave me the location of the nearest London Drugs. Am I going to get the same quality of service as I would from an Apple Store? And what is the exact process that they use, do they just replace it with a new LCD?Also, he said that it will be covered under Applecare unless it is ruled as accidental damage, he said that much of the time, the issue is caused by pressure on the back of the case, and that if that was the case, it wouldn't be covered.I can't really see how this would cause it, and I haven't ever put any pressure or anything on the back, but i did buy the iMac used, what are the chances of this being ruled accidental damage?I have the bleed in all four corners of the screen, if that makes any difference.

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IMac (Intel) :: PRAM Boot Up Sound Different?

Jun 17, 2014

when i bootup the imac, it sounds normal but when i want to do the PRAM, after the second bootup while holding command,option,R. it sounds weaker and different than the first one.

iMac, OS X Mavericks (10.9.2)

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Software :: Sound Not Coming Properly / Sound Changes Automatically From Normal To High

Feb 9, 2009

I just bought an iMac 24" 2.8Ghz Dual Core, 2Gb RAM, 320 HDD. This nice iMac has been with me only 2 days and the problems already started. I don't know why when I play a song either in iTunes or in web(audio streaming) the audio suddenly changes. It's as if you applied an EQ and removed all the low frecuencies and after a few seconds the sounds returned just as normal. When this "auto EQ" happens, the sound becomes "brighter" (I hope you understand what I am trying to say) but just as I said, after a few seconds, the sound is played normaly. I am running Mac OS X v 10.5.2.

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IMac PPC :: Computer Won't Start / Tried Unplugging And Holding In Start Button

Jun 21, 2012

computer won't start. tried unplugging and holding in start button. After about a half hour and unplugging a few times, finally got it going. Imac G5

iMac, MacOS X (10.5)

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MacBook Air :: Trackpad Click Button Not Working Properly

Feb 26, 2009

basically i havent had my macbook air that long (few month, maybe few more) but all of a sudden the click button on the trackpad has almost became slightly annoying, that when you press it slightly it clicks in as if youve clicked but nothing has happened, and then i press a slight bit more (normal pressure for a click) and it works normal. its just really annoying and it seems to be getting worse at one end, and ideally id like it to stop.

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Hardware :: Mighty Mouse Button 3 Not Working Properly

May 5, 2009

Today after I cleaned my mighty mouse (by rolling the scroll ball on a piece of paper) the Button 3 would not work properly and neither would the primary button. When the scroll ball is set as Button 3 the primary button and the scroll ball both do Button 3 actions even though in the preferences its not set up that way. I can't click anything with it, it just keeps opening new tabs in Firefox and when I click those tabs they close. And as I typed this I noticed the secondary button isn't working well either. I took out the batteries, turned off bluetooth, changed the preferences, restarted my MacBook and it's all the same.

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PowerPC :: Reset Button On G5 Tower Motherboard?

Jun 18, 2007

Anyone know? And if there is one where it is? Also: can the motherboard be reset using software?

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OS X :: Reset Button On Disk Warrior Grayed Out

May 20, 2009

I have an I mac running 10.4. I had to reboot it form Dis warrior, DW did it thing told what ever was wrong and it fixed, now when is all done scanning and "fixing" my computer the reset button on the DW is grayed out, only the cancel button is on. I have reboot it about 4 times to no avail same thing happens.

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