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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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?
Info:
Mac Pro, Mac OS X (10.6.8), 8 core 9gb RAM
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Dec 8, 2009
I am a very happy mac owner and recently decided to upgrade our studio workhorse to 10.6.2. The update process went flawless, the machine however felt very sluggish afterwarths. I went on this excellent board to seek some help and found a little cleaning tool that solved a lot of the problems but only left the machine slightly less sluggish.So now I completely reinstalled the machine and I am still having the feeling it is sluggish .
Let me explain my setup:
8-core 3.0ghz, 4GB RAM (4 dimms, apple mem, replaced once), 4 x500gb spinpoints in a 3xdisk raid 0 volume and 1 HD for the OS.
The main purpose of the machine is running Cinema4D 11.5 and After Effects CS3. There is no illegal software on the machine and everything is filed and backupped in a professional way. I know it is a bit short on RAM but for now it works nicely. Now my problem is that Expose feels sluggish meaning it takes 3 second for it to pop up and as soon as I save something I can wait for another 3-5.
I closely monitor my RAM through istat and I know everything will grind to a halt if it comes above 71% total memory usage, in my case this always happens. It feels like there is a permanent After Effects render running!I don't know what to do because I already reinstalled the OS to a formatted HD.I hope this excellent community is able to answer my questions.
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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.
Info:
Mac Pro (Mid 2010), Mac OS X (10.7.3)
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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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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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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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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.
Info:
MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.5)
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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.
Information:
Powermac G5
Mac OS X (10.4.10)
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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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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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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?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jun 29, 2012
When exactly do you need to reset the SMC, PRAM or repair permissions?
Info:
iMac, Mac OS X (10.7.3), iMac Late 2009
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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.
Info:
Mac Pro
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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.)
Info:
MacBook Air, OS X Yosemite (10.10.1)
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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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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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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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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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Apr 29, 2012
Firmware password will not reset. Resetting PRAM fails. Resetting NVRAM in Open Firmware fails. Resetting PMU fails.
Info:
MacBook Pro, Mac OS X (10.7.3), (MacBook pro 8,1)
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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.
Info:
MacBook, Mac OS X (10.6.8)
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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.
Info:
iMac, Mac OS X (10.6.8), 3.2 GB Dual Core
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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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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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Jan 8, 2010
One of the hdd's in my macpro runs constantly. The computer is constantly reading and writing to the hd. Not sure which one. CHecked processes and it shows that it is in fact doing so, even with no open applications. Not sure where to look or how to fix it. SLowing down my computer as well.
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Mar 16, 2009
I just took advantage of the cheaper Trans'intal Memory available online and upgraded from 8GB to 12GB.Subjectively the machine now sounds noiser, but Hardware Monitor shows there is no increase in the fan speeds, ie same as prior to upgrade. However Hardware monitor definitely shows an increase in temperature in the Memory banks, has anyone else had this experience?
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Feb 25, 2010
I am selling my 2 year old iMac. It came installed with Leopard 10.5, and I have the original DVD's. I recently (about a month ago), upgraded it to Snow Leopard. I was looking at this site: [URL] To get some ideas on how I can completely reset the system, to almost a factory install. Would I have to follow the steps to a full system install of Leopard, and then install Snow Leopard upgrade? Or can I use the Snow Leopard disk, to directly install that version as the clean install? At the end of the process, I would love to leave the system as "new" as possible.
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Jun 5, 2012
My boys have recently altered their profile to the point that I simply need to start from scratch and reset or delete it all together. How do I go about fixing their profile/ resetting or deleting it to start over. None of their icons show up, someone has moved the My applications folder, Documents, and Downloads folders onto the dock and I am unable to change or remove them. We are currently running on Snow Leopard.
Info:
iMac, Mac OS X (10.6.8)
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Jun 25, 2010
How to reset snow leopard so that it boots up as a new mac? Boot -> cmd + s and what to write?
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Apr 24, 2012
how do i reset my stickies on my macbook in snow leopard
Info:
magic mouse, Mac OS X (10.5.8)
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