MacBook 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 :: Which PRAM Battery Suitable For G4 PB (A1106)

Oct 19, 2009

I 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.

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MacBook Pro :: Unable To Charge Battery / Battery Completely Dead?

May 20, 2010

I just want to make sure nothing else is wrong with my Macbook..have never replaced the battery in 3+ years...Always says not charging and once the magsafe is removed Pro shuts completely dead battery the only problem..?

Battery Information:

Model Information:
Serial Number:Sony-ASMB012-3856-4ebc
Device name:ASMB012
Pack Lot Code:0000
PCB Lot Code:0000
Firmware Version:0110
Hardware Revision:0500
Cell Revision:0303
Charge Information:
Charge remaining (mAh):0
Fully charged:Yes
Full charge capacity (mAh):0
Health Information:
Cycle count:218
Condition:Check Battery
Battery Installed:Yes
Amperage (mA):0
Voltage (mV):10209

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MacBook Pro :: PRAM Battery Dying On 38th Week 2009?

Apr 4, 2012

Now 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.

10.7.1 iMac 5,1 MacBook Pro 3,1, Mac OS X (10.7.1)

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MacBook Pro :: Trojan Causing Low Battery Life And Higher Temps

Mar 13, 2010

I noticed my battery life and temps a higher then normal, decided to purchase and scan with virus barrier X6 and up came a iservices.b2 trojan. I removed it and now I notice my temps 10c lower and battery life about 1 hour more. This trojan was sitting resident on my mac for a little while now without my knowledge. Intego says it is mostly bundled with pirated software, but I have nothing pirated, everything I purchased. Now I am trying to find where this came from. If you have high temps and a low battery life unexpectedly....scan your machine.

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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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Change PRAM Battery For IMac G5 ISight

Apr 3, 2012

How do you locate and/or change the PRAM battery in an iMac G5 (iSight)?

iMac, Mac OS X (10.5.8), PPC, 20", G5

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PowerPC :: Powerbook Will Not Power On - Disconnecting The PRAM Battery?

Jun 22, 2007

My Powerbook will not power on. I have followed some instructions on disconnecting the PRAM battery and that did not work, any ideas? I just stopped coming on without any explination.

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MacBook Pro :: Dead Battery - Plugged Up

Oct 12, 2010

My wife and I always leave our MBP plugged up when we are near a charger. This morning the MBP had been plugged up all night, but the battery was dead. I noticed the light was out on the charger so I went to take it out, but when I touched it it turned red indicating that it was now charging. It turns out it is very finicky and randomly stops charging. Anybody else had problems with their charger? It will be Thursday before I have a chance to get to the Apple store.

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MacBook Pro :: Cannot Log On To 13 After Battery Gone Dead And Reacharged

Mar 13, 2012

My MBP battery was dead for about 1.5 weeks. I charged it fully but now when I try to log on it doesn't seem to recongnize my password. 

Also during start up, the spinning wheel appears as usual but also a progress bar that wasn't there prior ro dead battery. It only seems to progress about 30% of the way across before reverting to my login page. 

Could I have damaged something by lettinbg the battery go dead for so long? 

BTW the factory reset procedure doesn't seem to work. Should this procedure be executed from power off or power on mode? 

Mac Pro, Mac OS X (10.7.3)

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MacBook :: New Battery Failed Overnight?

Apr 12, 2012

This was a new battery 8 months ago. I checked its health periodically and all seemd good until two days ago when the battery went from healthy to dead in less than 8 hours. Is there anything to do to bring this one back to life or is the only remedy to buy another one?

Macbook, Mac OS X (10.5.5)

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MacBook Pro :: Logic Board Failed Because Of Battery Connector

Jul 3, 2012

After 1.5 years of use, my MBP's hard drive failed. So I purchased a new SSD and followed carefully the installation guide on [url].. and also [url]..

After the installation my macbook was unable to power up. I took it to Apple Genius Bar and the guy told me my Logic Board has been damaged, possibly because of the installation. He also told me I was not meant to disconnect the battery connector because this causes damage to Logic Boards.

Info:MacBookPro, Mac OS X (10.7.2)

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OS9/OS8/System 7 :: Startup A Dead Quadra 840 Av?

Mar 25, 2012

how do you startup a dead quadra 840 av i will give 10 points to every usefull reply

Info:quadra 840av, Mac OS 8.6 or Earlier

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MacBook :: MacBook 3,1 Screen Goes Dim When Plugged In / Battery Is Almost Dead

Apr 2, 2012

MacBook 3,1 screen goes dim when charger plugged in. Battery is all but dead. Green light is on on the charger cord connector at computer. Computer turns on then goes dim after a few minutes. Can a dead battery cause this, i.e., is it worth it to get a new battery to try and save this?


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PowerPC :: IBook G4 - Battery Dead

Sep 8, 2007

My mum has an trusty iBook G4, and finally, after ~4 years now, the battery is on the fritz. I have tried resetting PMU, but it appears the battery itself is on the way out. Is it worth purchasing a new battery for it? Or should I tell her to take the plunge and buy a low-end Macbook [non pro] to replace it?

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Hardware :: Mac OS 9.1 Not Booting Up - Battery Dead

Jul 5, 2008

I had a quick question that I'm sure one of you guys can answer. I have a PB Wallstreet 266mhz and it works fantastic minus the fact that the battery is dead and the pram doesn't seem to be functioning. On the rare occasion that I cold boot it I get nothing onscreen for about 15 seconds..then I get the good ole greyscreen and onto the Mac OS 9.1 loading screen. Is this normal for this type of powerbook? Is it because the PRAM and main battery are dead?

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IMac PPC :: It Won't Startup After Failed Upgrade Install

May 1, 2012

iMac won't start up after failed upgrade install, all I have is a folder in the middle of my screen. And it won't allow me to reinstall my restore discs....

iMac, Mac OS X (10.4.11)

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PowerPC :: Ibook Battery Swap - Dead?

Dec 31, 2006

I have just bought an old ibook g3 on ebay, the battery in it is dead, if the battery is one of the ones effected in the recall will I apple just send me a new one even thought the battery is already dead?

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PowerPC :: Leopard On TiBook - Battery Dead

Apr 24, 2009

I have the 1GHz Ti Book, 15", 1GB PC133 memory, 60GB 4200 RPM drive, Tiger, and it's awesome. Battery is basically dead (10 min). I do typical web/email stuff.I also do some music recording and it works fine. Watching video is difficult on [URL] though. I need to upgrade to Leopard as I want to start doing Web Development using Rapid Weaver. The new version of Rapid Weaver requires Leopard. So, while I'm planning on purchasing a new machine soon, I wonder if it's worth spending the money to:

1) buy Leopard for my TiBook (are there performance issues?)
2) buy a 7200RPM drive (for performance)

in order to run Rapid Weaver 4.0 or not.

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OS X :: MBP Reboots After Dead Battery In Sleep Mode

Jan 21, 2010

So, back in the day, when my MacBook Pro's battery would die while asleep or on and you plug it back in, the laptop would essentially revive itself from your last used state. Its like waking from sleep, but takes longer because the computer has backup the memory state to the hard drive.

Its seems my MacBook Pro no longer does this. When the battery dies and I turn it on, it reboots. I am not sure if it is related, but I have modified my MacBook Pro by removing the optical drive and replacing it with an 80GB Intel SSD to compliment the 500GB 7200rpm Seagate. The SSD is the boot disk and is in the DVD Drive's old spot.

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PowerPC :: Charger - Not Glowing Green / Amber - Battery Dead

Oct 30, 2010

I have a 17" PB with a couple of growing issues. Right now I am unable to use it for one of several reasons. About a year ago I purchased a charger off of Ebay to replace the original one that started sparking. Shortly after I received the new charger I started having issues with the charger connecting. I would have to twist it and turn it to find the right spot. Now, it doesn't glow green or amber at all. That sweet spot is completely gone. Also, the battery is completely dead. It needs to be replaced. Not sure at this point if I'm sitting on a dead charger or if I need to replace the DC-In board. I have never had a major accident with the machine but I do recall snagging the chord once or twice. It is possible something was damaged inside when that happened. I've never had an issue like this so I'm not too sure about the symptoms. I'm thinking a new charger would be the cheapest and safest start. I don't feel very confident purchasing one from Ebay again.

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OS X :: Macbook Blue Startup Screen - Battery Cannot Charged?

Jul 6, 2009

I just want to say thanks apple for being a piece of **** machine. I have the first macbook 1.83 ghZ 2gb (that I bought from crucial) intel core duo. The problems I have had:-Battery not charging (70? replacement because I had no more warranty)-Burnt and melted charger (also expensive)-And now the problem is unknown all I know it will not start.-Faulty Macbook Air -After the second Macbook Air the charger would not work.I mean you would think that so much money for slow computers would get you reliabilit

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MacBook Pro :: Fan Runs Constantly From Startup / Battery Life Getting Worse?

Oct 20, 2009

I've got an early 2008 Macbook Pro and, recently, I've noticed that the fan (fans?) begins running from the moment the computer is powered-up. iStat tells me that both fans are running at about 2000 rpms, though I only hear a slight whoosing noise from the left side. I don't remember the fan running constantly, and I have noticed that my battery life seems worse than normal recently. Is this normal, and something I just haven't noticed until recently?

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MacBook Pro :: Battery And Wifi Icon Loads Too Long On Startup

May 27, 2012

After installing Adobe CS6 Master Collection, i noticed during start up that the battery and wifi icon loads too long, it took about a minute before they will show up, and when i point to that area, the pointer turns to beach ball..

Info:MacBookPro, Mac OS X (10.6.8), i7 2.2 17"

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MacBook Pro :: Lion Related Slowness - Startup Time Increased / Battery Life Low

Feb 12, 2012

Ever since I upgraded my Macbook Pro (mid 2009) dual core from Snow Leopard to Lion, the start up time has increased significantly, and the battery life seems to be lower than it has ever been. It has been several months since I upgraded so indexing is not an issue. What should I do, and how can I get back my missing battery life that Lion took away? And how can I make my reboot and startup time faster.

MacBook Pro, Hard drive

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Software :: New Battery - G4 Freezes On Startup

Jan 4, 2009

I'm working on a G4, 733 mhz Power pc running 10.4. After replacing the internal battery, computer freezes up at startup. I hear the chime, blue screen and OS X box appears with progress bar and then nothing happens.

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MacBook :: Zap PRAM After HDD Replacement?

Mar 1, 2010

With 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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OS X :: Snow Leopard Failed To Install / Graphics Card Failed / System Crashed Had To Reinstall?

Oct 1, 2010

So I have a macbook pro old model.Recent Problems:graphics card failedsystem crashed had to reinstall system crashed again and would be stuck on apple logo
now after i reinstalled SL after the stuck on logo problem my mac was fine.3 weeks later which is now it started to lag,slow,unresponsive.So i tried repairing disk utility and FAILED then i tried reinstalling osx FAILEDthen i had to delete my whole harddrive :*( and reformated the harddrive.FAILED AGAIN.calling apple is a no because i already called alot before so now they want to charge.So did i reformat wrong? something?

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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 :: PRAM No Longer Working?

Mar 28, 2012

I cannot reset my computer’s PRAM anymore. What can I do to fix this myself?

MacBook, Mac OS X (10.6.8), Purchased September 20, 2008

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MacBook Air :: Resetting PRAM And NVRAM?

Jun 5, 2012

Is it ok to have a PRAM and NVRAM reset two times a week?

MacBook Air, Mac OS X (10.7.4)

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MacBook Pro :: Resetting The PRAM - Won't Stay Asleep

Nov 2, 2009

I 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.

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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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PowerPC :: Ibook 14 Shuts Down At 50% Battery - Wrong Time At Startup

Jul 26, 2008

Purchased this notebook used, but very nicely cared for, excellent condition. I ran the Apple Hardware Test and everything passed including the logic board.

The battery has 500+cycles. The problem is laptop shuts down at 50% or less of battery. Clock is wrong at startup but is correct a few seconds later.

Runs forever and very nicely on ac power.

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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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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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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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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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