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.
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.
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 off...is completely dead battery the only problem..?
Model Information: Serial Number:Sony-ASMB012-3856-4ebc Manufacturer:Sony 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 Charging:No Full charge capacity (mAh):0 Health Information: Cycle count:218 Condition:Check Battery Battery Installed:Yes Amperage (mA):0 Voltage (mV):10209
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.
Info: 10.7.1 iMac 5,1 MacBook Pro 3,1, Mac OS X (10.7.1)
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.
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.
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?
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?
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.
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?
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?
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?
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?
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)
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.
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.
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
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?
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..
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.
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.
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?
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.
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?
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.
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?
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?
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.
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.