PowerPC :: PowerBook G4 12" Alum 1GHz Display/resetting Pram And Pmu?
Sep 3, 2009
I've recently purchased a broken 1GHz Alum PowerBook G4 12", and the display isn't working. I have a total of two 12" PowerBook displays, and I've tested both. They've worked perfectly fine. Then I've tried reseting the PMU and PRAM, no luck, but they've attempted to work. Tried the Mini-DVI to VGA adapter with my display, still no luck. The keyboard, optical drive, and hard drive works as if it was booting, and there was always a clear chime, even when I've reset the PRAM and PMU (the beep sound when PRAM also attempted). I've inserted a Leopard install disk, and it sounded like it was working perfectly fine. Hopefully it's not a motherboard issue
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Apr 30, 2008
First off, is this even possible? I can't figure out if my internal wireless "card" is a removable piece like it was on the iBooks of the same generation. I know that wireless G was standard on the Alum Powerbooks, but does that mean it was soldered in somehow? When I replaced my HD last year I don't recall seeing one...
If it wasn't soldered, and it's a replaceable card, does anyone make a compatible N card that I can drop in it's place? Times are changing and both my house and my work will have N routers, and I would like to take advantage.
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Jun 6, 2009
an ssd drive, preferably 128+gb
2gb 533 mhz ram
22" monitor
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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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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.
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Jun 5, 2012
Is it ok to have a PRAM and NVRAM reset two times a week?
Info:
MacBook Air, Mac OS X (10.7.4)
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Jun 20, 2014
I 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.
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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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Apr 26, 2012
I used to reset the PRAM by restarting and holding alt+command+p+r My new iMac came with a wireless keyboard and this way of resetting is not working. Apparently the Mac starts before it hooks with the keyboard.
Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.3)
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Aug 3, 2010
What does everyone mean when they say this?
What does it do?
Basically, all the general information about it.. I've been reading people's problems and I see this all the time, and I'm totally confused on what it.
Also, what is PRAM? What does resetting it do?
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Sep 3, 2010
I have a 2006 Mac Pro and recently my firewire ports stopped working (front and back). I did a little searching around found a suggestion to try resetting the Mac's PRAM and NVRAM by holding the Cmd-Option-P-R keys down while booting. I have tried this numerous times and it doesn't seem to do anything (i.e. the Mac just loads OS X and doesn't re-boot like the instructions say). I'm using a MS Wireless Comfort Keyboard for Mac. Can you reset using a wireless keyboard?
Since I wasn't making any progress with that, I was toying with bringing in the Mac to a genius bar. Never having used the genius bar before - how does it work? Do I bring the computer in and leave it with them? Do they work on it while I'm there? I don't have an extended warranty so do they charge time and materials? I'm wondering if that might get awfully expensive and if I ought to just buy a PCI-X firewire card instead.
Any suggestions?
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Aug 7, 2009
Man, what's up with this? Shut down on my early 2008 MacPro (10.5.7) takes forever! I've tried resetting the PRAM and it did this with earlier versions of Leopard as well. I've reinstalled the OS twice, changed hard drives and wish I could fix this.
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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 22, 2007
For the past few months i have been using an external display hooked up to my 12" powerbook g4. I have had it on a dual display mode so no mirroring. Recently i would open the laptop lid waking it from being in sleep mode and my internal display will not turn on. The apply system profiler does not even recognize that the internal display exists. My external display works fine and has always been set as the main display. If i go to detect displays nothign happens. I have tried restarting the computer, instering system disks, unplugging the external and nothing has worked. I simply cannot get my internal screen to fire back up. When i used to unplug my external display the internal display would switch back to being the main display and everything would be fine. Now i cannot get the internal display to function whatsoever. Please try and help me as a need this laptop working and i will be ordering a mac pro soon for use with my external display.
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Jun 17, 2014
I have a mid-2011 iMac (with Mavericks OS), and am doing a clean install before giving my computer to a relative. I performed a secure erase of my entire harddrive (using disk utility), reset the NVRAM / PRAM (but it only chimes once even after I tried several times), and now I get the grey screen even when I try to boot from CD, safe boot, or any other commands. I can't even get back into the disk utility.
On a side note, I have the install DVD in the DVD drive and I can't get that out.
Info:
iMac, OS X Mavericks (10.9)
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Apr 13, 2007
I am currently experiencing the issues displayed here... http://www.apple.com/support/powerbook/displayprogram/
However my serial # does not fall within the ones specified. My powerbook was purchased in early Sept of 2004, and I have applecare so it will be up in Sept of 2007.
I am unsure of what I should do at this time and am looking for recomendations of how to handle the situation. I am aware that apple will probably try to say that is it somehow my fault and that i put too much pressure on the lid of the powerbook (as this happened to a friend of mine, and she was actually within the serial #'s that were specified in the link above)
I have kept my powerbook extremely protected (at one point I even had it in a neoprene sleeve inside of a hard sided zip case!) and really don't think it's anything i've done, or wear and tear on the notebook (it's in near mint condition other than a few spots just below the arrow and command keys.)
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Mar 5, 2008
I just bought a 23" ACD and I'm having trouble getting it to work with my 17" Powerbook. I checked it in the store before buying and it worked fine, but at home it's not responding. The display is recognised in Preferences and is giving me a choice of resolutions, the light is on, but I can't get the screen to show anything. I've tried adjusting the brightness to bring up an image to no avail, turning mirroring on, and closing the lid on the Powerbook then waking it again but nothing gives me an image on the 23".
My Powerbook is a 1GHz 17" with a GeForce4 MX 64 MB.
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Oct 16, 2008
when I woke my pbook up the screen had a horizontal line across it, and below that there is doubling and tripling of the screen image going on. Rebooting didn't accomplish anything and when I take a screenshot it doesn't show up there. I have a 12" Powerbook G4, running os 10.4.11.
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Jun 3, 2009
The connections won't allow me to hook up the new LED display to my PowerBookG4 (Mac Pro on the way), but I'm wondering whether I can still just use iSight safely without using the actual display.
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Jan 3, 2010
I just bought a Powerbook G4 off of Clist. The previous owner replaced the screen with a higher resolution screen from a newer Powerbook. The display looks great, except that it doesn't fill the whole screen. There is a long group of colored lines on the right side, and the bottom starts to show the top of the display (it looks almost tiled and shows the screen again on the bottom). I'm guessing that this is just a formatting issue, but I'm not sure how to correct it.
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Mar 7, 2009
irst off, according to mac tracker the Powerbook I have is the Powerbook G4 15 inch FW-800. I am running Mac OS X Leopard 10.5.6
Alright. About one week ago, I hooked up the powerbook to a 19 inch external LCD monitor with a DVI to VGA convertor, and all was well. It found my supported resolution and everything, worked straight away, etc.
Fast forward to today, at about 2pm (4 hours ago) I was using the computer and everything was working fine, but I had left it on for a few days so I shut it off when I was about to take a nap. I wake up from said nap about 20 minutes ago, turn on my Mac and my external display is only showing up at 800x600. I have no idea how this could have happened. This would not be an issue if my monitor's native resolution of 1440x900 were on the massive list of resolutions to chose from, but alas it is not.
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Jun 6, 2009
I have 512mb ram which works fairly well but am thinking of upgrading to 2 gigs before i upgrade to leopard have you experienced any significant speed gains?
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Aug 30, 2006
I have a 17" PowerBook G4 1gHz with 1gb of ram currently installed (2x512). Technically this is the maximum ram for this computer according to Apple. I have heard I can upgrade to 2gb (2x1gb) and the reason for the limitation in the original spec was the 1gb ram stick for PowerBooks did not exist when the computer was released.
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Nov 10, 2010
my video card went out on one of my G4 towers. [URL] The card that was in it was an Nvidia GeForce 2 MX and it ran Leopard 10.5.8 pretty nicely. I figured I might as well get a better card and see if it runs smoother. Can I put an Nvidia GeForce 4 MX in, or do I even want to? I want a good video card, preferably with an ADC connector as I still use my original monitor.
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Jun 25, 2007
I have been viewing the forums for the past few months and have finally joined MacRumors as I have purchased an ibook G3 (first mac). I love it to death, it is so portable and even runs like a champ considering it is almost 4 years old. The ibook has a 800MHZ G3 processor along with maxed out ram at 640MB. Anyway I am planing on buying an TV before school starts up again and would like to encode my dvds to h.264. I was wondering if my computer can handle this task. BTW I would need to buy a dvd drive for my computer along with an external HDD. My other option is to buy a friends Powermac G4 with dual 1GHZ processors(he is selling it at $250) it already has a dvd drive and two 200GB HDD so that will save me ~ 150. As I am new to macs and would like to know if the Powermac will significantly make a difference in encoding times or should I just stick with my ibook and save the $100?
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Jun 26, 2008
I have been searching high and low for a alternative heatsink for a dual 1Ghz G4 CPU. I just got this chip off Ebay, but by dual heatsink, that works with a dual 533Mhz, won't fit. And I can't find anyone who is selling just the heatsink.
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Aug 13, 2009
I have no sound, and the volume buttons don't work. When I turn the system on I get the "bong" but after that I can't seem to get anything. In system settings, it says there is no audio output device.
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Apr 25, 2010
I running a 400MHz sawtooth Family #M5183 my friend gave me with a 40 gig hard drive running OSX 10.3.9. I just picked up at the swap meet a Qwicksilver Model No.M849 PNG4 1GHZ DP/2M CACHE/512MB SDRAM? 80GB HD DVD-R/CDRW/Nv17 DUAL/56k MDM/GIGE it is missing the HD from under the superdrive can I just plug in the HD from my Sawtooth and run her? She still has the HD in the bottom its a 80 gig IBM Deskstar. When I opened my Sawtooth I found that there is a Seagate Cheetah model#*ST118202LW* Its not even plugged in!!! How many gigs is it and can i run it for more space? I have three 512 cards for memory. Can I use the video card from the sawtooth to run a second monitor? If this all works whats the newest operating system I can run? As soon as I get the money I am going to swap the processor and bring her up to speed. I am a singer/songwriter on a budget trying to put my studio together,I run live sound and make Hand Drums.I'm not a computer tech by no means but I do ok running a mouse to get a good sound. If you are going to tell me to wrap machine in tin foil and put it in the freezer PLEASE don't waste my time!!!!! I just want to build my machine correctly and not f@#$ anything up.
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Dec 13, 2007
Wondering if it makes sense to sell my QS dual 1ghz and get a Mac Mini C2D or upgrade the QS with a faster video card (Ati 9800 pro, about $120 on ebay). The QS already has a fast HD and 1.5gb ram. Looks like either option would be about the same price. I won't need to upgrade either Mac in the future, it will be the home Mac (A new Mac Pro after 1/15 will be my main Mac at work).
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Dec 18, 2007
So my Pismo died shortly after I added an addtional 133Mhz 256MB RAM module to it. Don't know if the daughter card CPU connector socket is no longer making excellent contact, or I just static electricity shorted it (RAM transfered to new TiBook works just fine, so probably something more serious like logic board or PS gradually dying was what lead to kernal panics and finally only booting up to chime sound and black screen)...but long story short after lots of searching/troublshooting, I got a used 'dealer refurbished' 1Ghz TiBook from Wegener Media. Cost more than a alum PB, but it's the fastest dual boot (yes, I know, but I still want OS9.2 bootability) laptop in Apple's line. Only problem when I received the system, I did Apple Profile on it, and found no Airport Card installed. Sent an email to Wegener and got a reply that there were at least 9 different configurations of 1Ghz Tibooks, and that Airport Cards where a "CTO (configure to order) optional, not stock, item"...in Wegener's words.
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