MacBook :: Zap PRAM After HDD Replacement?
Mar 1, 2010With the early uMB 2.4 do you have to zap the PRAM after you upgrade your HDD? if so how do you do this?
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MacBook :: Tried To Reset The NVRAM And The PRAM But Cannot?
Aug 9, 2009I 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.
View 3 Replies View RelatedMacBook Pro :: It Won't Boot After PRam Reset
Mar 6, 2012I 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)
MacBook :: PRAM No Longer Working?
Mar 28, 2012I cannot reset my computer’s PRAM anymore. What can I do to fix this myself?
Info:
MacBook, Mac OS X (10.6.8), Purchased September 20, 2008
MacBook Air :: Resetting PRAM And NVRAM?
Jun 5, 2012Is it ok to have a PRAM and NVRAM reset two times a week?
Info:
MacBook Air, Mac OS X (10.7.4)
MacBook Air :: IOS 8.1 - Frequent PRAM Resets
Dec 8, 2014My MacBook Air has required a PRAM reset twice recently. Why is this? What can I do to prevent this?
Info:
MacBook Air, iOS 8.1
MacBook Pro :: PRAM Reset Not Having Any Effect
Sep 7, 2014I 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)
MacBook Pro :: Which PRAM Battery Suitable For G4 PB (A1106)
Oct 19, 2009I think my PRAM battery is dead (date resets to January 1st 1970 when started up with main battery removed) but I can't find a replacement PRAM anywhere (I'm in the UK). According to iFixit the part number is 820-1686-A - is this the only PRAM module that will work in my machine? (I've seen lots of other similar looking parts on eBay, but with different part numbers). Also, is it not possible to actually just replace the battery, not the whole circuitboard? It looks like a regular watch battery I could pick up for $5 from the pic.
View 6 Replies View RelatedMacBook Pro :: Resetting The PRAM - Won't Stay Asleep
Nov 2, 2009I have a February 2008 MBP and am having issues with keeping it asleep. I currently have it set up as a desktop connected to an external monitor, keyboard and Magic Mouse (along with a variety of other peripherals) and I've recently noticed this issue. I'm running 10.6.1, I have tried everything from resetting the PRAM, SMC and repairing disk permissions to even installing a clean copy of Snow Leopard and restoring from Time Machine backup.
For power management, I have it set to never sleep, since I manually set it to sleep and don't want it sleeping on me when in use. I also have Wake on LAN activity disabled. Yet when I set it to sleep, at approximately noon the next day it wakes up by itself. I've even turned off the Magic Mouse to make sure it wasn't being moved by vibration and waking up the Mac. I'm completely stumped!
For troubleshooting purposes, I've installed a clean copy of SL without restoring TM backup to see if it's a program that's causing this issue or if it's a problem with a peripheral. I've yet to check back on it as I'm at work, but I'm hoping it's just software related. I'm at a loss as to what to do.
MacBook Pro :: When Do A PRAM Reset They Prompt For Password
Mar 12, 2012when 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)
MacBook Pro :: Cannot Turn On Despite SMC And PRAM Resets And New Battery
Dec 10, 2014I have a macbook pro that is simply dead. I have tried an SMC reset, a PRAM reset, and I bought a new battery. I see the green lights on the back of my battery and the power cord is an apple cord that appears to be just fine. I have also tried to power on the computer with the power cord plugged in but the battery out.
Worth noting that I do not hear any fans, any clicks, or *any* indication that the computer is trying to power up. The only signs of electricity are the green lights on the battery and the small charging light one sees on the cord when plugged in to the computer.
MacBook Air :: Why Have To Continually Reset PRAM To Boot
Dec 2, 2014Recently 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)
MacBook Pro :: Reset SMC And PRAM - Still No Ability To Auto Sleep
Aug 22, 2010Today 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?
View 7 Replies View RelatedMacBook Pro :: Dead PRAM Battery Causing Failed Startup?
Jul 28, 2008 one of my Al Powerbooks decided to kernel panic twice in the past two days and both times fail to start up afterwards. The symptoms would be that when I pushed the power button, I wouldn't hear the Apple startup sound and it would just sit there.
Well, after a few tries and some sadness, I decided to remove the PRAM battery card and voila, computer boots up perfectly! This has actually happened twice (removed PRAM card, booted up, then put PRAM card back in, then eventually exact same situation occurred again), does anyone know if a PRAM battery card can possibly wreak suck havok on a G4 running Leopard.
MacBook Pro :: How To Reset PRAM/Start Up Sound Loud/Implications?
Jul 9, 2009I 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?
MacBook Pro :: PRAM Battery Dying On 38th Week 2009?
Apr 4, 2012Now normally I wouldn't expect it in an under 4 year old machine, but the normal battery is working as expected. However, when I'm not plugged into power, my WiFi doesn't always reconnect, and when it does, the internet doesn't seem to connect either 90% of the time. When I'm plugged into power, no problem. 3 other machines on the same wireless network have no issues with it, though my cable company says they are detecting intermittent signal loss, which I can't reproduce on any other machine. The other reason I believe it is the PRAM battery and not the main battery, is during one reboot, the date reset itself to year 2000. Once I managed to reconnect the internet, I was able to set the date & time to the time server.
Info:
10.7.1 iMac 5,1 MacBook Pro 3,1, Mac OS X (10.7.1)
MacBook Pro :: Firmware Password Will Not Reset - Resetting PRAM Fails
Apr 29, 2012Firmware 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)
MacBook :: Shuts Down When Unplug Magsafe - Reset PRAM / SMC To No Avail
May 18, 2012I 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)
MacBook Pro :: Failing To Boot Up Despite Disk Utility Repair And PRAM
Jun 2, 2014Problem: MBP frozen on boot up screen with Apple logo and turning gear (which freezes after a while aswell)
Solutions attempted: disk repair via custom recovery- disk utility, PRAM
Device: MacBook Pro 15" (early 2010) running 10.9
Additional info-
Never had any issue with the device and this seems to have happened all of a sudden. Installed an SSD a few months ago, and just realised the ssd did not have a recovery partition. However I connected my older hardrive via USB to access recovery which seemed to work fine.
NOTE: for the past few weeks, every now and then I was unable to power the device off and whenever this occurred, there seemed to be a few bugs (ie unable to empty thrash-error 50 and enable to increase/decrease volume/screen brightness). However, holding the power button and restarting it seemed to have fixed it.
Had the same issue but this time around MBP failed to boot up.
Info:
MacBook Pro, OS X Mavericks (10.9.3)
MacBook Pro :: Unable To Boot Past Gray Screen - Reset Pram
Jan 8, 2011My 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.
View 6 Replies View RelatedSoftware :: Macbook Pro Won't Boot / Will A PRAM Zap Kill My Windows Vista Hard Drive
Jan 21, 2009Hi everyone, I have a big problem. Today, I noticed that my Macbook Pro was running a bit strangely, with some video being slow and stuff, so I restarted it while it was in Windows Vista through BootCamp. I came back about ten minutes later to see a black screen, and the computer still on. I don't know if it restarted or not. I tried hard resetting it countless times, and messing with the battery like letting it run dry and stuff, but whenever I keep turning it on, I hear the "dong" boot sound, but the screen doesn't turn on, ever.
No I'm wondering if a PRAM zap will help fix the problem, but I really don't want to lose the hard drive and the stuff I have on it. I have a TON of school and work files on there that I simply cannot afford to lose. Will a PRAM zap kill my Windows Vista hard drive or should I even go ahead with it? I really hope that I can fix this problem myself, because the nearest Apple Store (and Geek Squad place that supports Macs) is over 40 miles away, and I really need the stuff for school on Tuesday.
Mac Pro :: PRAM Keeps Resetting By Itself?
Feb 28, 2010 recently had a small USB issue, so I reset my PRAM which fixed it.Now every time I boot the PRAM will reset itself. This particularly annoying because:1) It takes longer to boot as it restarts again and again (sometimes 3-4 times).2) I have the boot volume set to 0 and when the PRAM is reset it will go back to default which isn't fun [and it loud].
3) I have verbose mode on and a PRAM reset removes that as well, so I need to do the 2-finger combo [which on the bluetooth keyboard doesn't work half the time].I can't seem to fix it. I've done all the usual things (ie: manual PRAM reset with 4-finger combo, SMC reset, reseating hardware, disconnection hardware) and I've also gone ahead and installed OS X on a new volume for testing. Nothing is working and this getting a little frustrating.I try not to restart my computer, but recently I've needed to it a couple times. Apple Support doesn't know what to do and they're reluctant to send a on-site tech because they're not sure what the issue is. They want me to take my computer to the Apple Store, but (1) I don't have a car, (2) it's windy and snowing like crazy outside so there is no way I'm walking a mile to the Apple Store carrying the Mac Pro by hand, and (3) even if it was sunny outside my computer weighs a lot.Anyone know what's going on here? The computer passes all hardware tests and disk scans reveal no bad sectors.
OS X V10.7 Lion :: How To Reset PRAM And SMC
Mar 21, 2012I 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)
OS X V10.5 Leopard :: Unable To Zap PRAM
Apr 22, 2012For some reason (and I'm going to assume this only occured after I hit "software upate" a few weeks back) I can no longer ZAP my PRAM. Tried everything (inclding unplugging peripherals and connected drives) but to no avail. I can NO LONGER zap my PRAM. Any ideas why this occured and how to resolve it?
Info:Quad-Core Intel Mac Pro, Mac OS X (10.5.6)
OS X :: Zap PRAM - Repair Permissions & Run FSCK?
Sep 20, 2004The idea for this quick GUIDE was thought up in this thread by kingjr3. Like the networking thread the idea of this is to have a quick point of reference for those common questions. How to Zap PRAM Zapping PRAM is simple, just reboot your Mac and hold down "Command(the Apple key)+Option(the Alt key)+P+R" while it is booting, when you hear the startup sound for the seond time the operation is complete, and you can release the key combination. Now just let your Mac boot as normal. How to Repair Permissions
- Navigte to "Applications > Utilities", and open up "Disk Utility".
- Select the volume where your OS resides, and hit the "Repair Disk Permissions" button.
If you are comfortable with using the Terminal (Applications > Utilities > Terminal.app), you can also enter this command to run repair permissions - "sudo diskutil repairpermissions /" (without the quotes), just enter your password when prompted. How to run FSCK
- Restart your Mac holding down "Command(the Apple key)+S" key to enter 'Single user mode'.
- Type "fsck -f", and hit return.
- Once complete type "reboot" and hit return to reboot you Mac back in to OS X as normal.
If there is anything that you think is wrong here, or you think I have missed any vital steps out, please post and let me know so that I can ammend this.
Hardware :: No Sound And Can't Reset My PRAM?
Jan 20, 2009I 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..
Mac Pro :: Resetting PRAM Without USB Ports Functional
Jun 20, 2014I had my 2008 Mac Pro unpugged for a few days. When I turned it back on the USB ports weren't functioning. I can't reset the PRAM as my keyboard is not working.
View 1 Replies View RelatedPower Mac G5 :: Blank CDs Not Mounting -trying To Reset PRAM
Nov 30, 2007I 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)
Mac Pro :: SMC And PRAM Reset - Keyboard And Mouse Delay?
Feb 25, 2008I 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.
View 1 Replies View RelatedOS X :: Reset PRAM For Network - Troubleshooting Steps?
Aug 15, 2010Can 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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