OS X :: Mac Receive Power But Refusing To Boot Up
Feb 11, 2010
My MacBook is refusing to boot from the hard drive. I went to do the Boot Camp process to install Windows 7, and of course my dumbass didn't print out the 13 page instructions or read them. So I partitioned my hard drive, then put in the Windows 7 disc. After that, boot camp didn't do anything. So of course I was stupid enough as to restart my MacBook and try to boot up from the optical drive by holding down "c." When it finished the only thing that came up is a black screen with a 1. and a 2. and it says "Select CD-ROM Boot Type: _ " I can't get past that. I tried restarting and holding down "d," but that didn't work.
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Oct 24, 2008
I'm curious what is the best way to supply power to my new Mac Pro and monitors. I am currently running an 8-core Mac Pro with two 24" LCDs, external hard drive, Logitech 5.1 speakers, and a couple desk lights from one Belkin surge protector (this one: [URL]. I never really thought about it until now but is this too much to be running from one surge protector? I'm guessing the Mac Pro alone takes a lot of juice and after having some weird graphical errors, I read people mention that bad PSUs can display these problems so I was wondering if maybe there's not enough power available from a single outlet like that. I could be way off here, but I'd still love to hear how everyone has setup of their equipment in order to both supply power and protect your investment.
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Jun 25, 2014
I've been trying to partition my drives and install Windows on my late 2012 imac. I last adjusted my partitions using disk utility and now receive the prohibitory sign on start-up and cannot boot up in safe mode; pram reset; type commands in single user mode. Running on Mavericks OS.
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Dec 6, 2007
I added 2 sticks of 512 to my power mac g5 1.6. I had ahard time getting the computer to see the new ram, but finally was able to kinda get it working after zapping the pram. However my computer only saw these 2 sticks as 256, odd. So i attempted to troubleshoot the problem. I tried just installing the new ram, but the computer wouldnt boot. I tried a few different combos with the other 4 sticks i had, but nothing. I put the old memory back in, and still nothing. The power led looks to blink once every five seconds or so. I tried pressing the pmu reset button, but still the same out come. I also tried taking out the battery, nothing.
Information:
1.6 g5 single proc
Mac OS X (10.5.1)
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Dec 20, 2007
This is bad and old, and full of lessons about backing up. Anyway, internal boot drive crashed a week ago, and internal optical drive is busted. New external LaCie dvd burner works fine, but all attempts to start up from Tiger, Leopard and Diskwarrior installation disks just end up back in OS10.3 on my external LaCie FW drive. I've tried many things: unplugged everything; switched external LaCie to USB (wouldn't boot), unplugged power from internal optical drive so Mac wouldn't look there first (somebody suggested that). Attempts to start up installers from mounted DVDs result in installer screen with restart button, which, when clicked on, results in... you guessed it... boot back to dreaded 10.3 system. Night owls and westcoasters, I am up for hours yet, pulling hair.
Information:
G5 Dual 2GHz
Mac OS X (10.4.3)
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May 3, 2012
My macbook pro refused to allow me to log on for several hours yesterday. It was suggested by someone in the IT department at work that it sounded as if someone else was in control of my computer.
Info:
MacBook Pro (13-inch Mid 2009), Mac OS X (10.6.8)
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Jun 11, 2012
my old 2x2Ghz PM G5 (late2004) doesn't launch the boot sequence:
- when pushing power button, the blue led turn ON as long as I keep it pushed. If not pushed, it light off but yet the fan are running.
- no chime
- the fans turn on normally and the hard drive start a little to make noise once powered up.
- no video on display, the screen is black.
- the keyboard is not recognized anywhere I plug it. Â
- after a minute or two of non activity, the fans start to blow full speed (guess its a security measure for saving processor)Â
I ve done the reset of PMU several time (unplug the power cord then push the button at bottom of mother board)As i dont have access to keyboard, I can't start on Target mode to check if the HD is failing all.I ve removed all RAM extensions and left only one pair in slot 1 (J0), and changed the pair to avoid a faulty RAM.I only have a redlight on motherboard if I don t put back the glass panel.I ve check the voltage of the lithium battery, and yet its the original, the voltmeter says its 3,6V...Â
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Aug 18, 2010
When I try to turn up the backlight of my keyboard, it keeps giving me the "zero" symbol that looks like a O with a / through it. I have not spilled anything and haven't tampered with anything. Will it refuse to light up if I'm in a lit enough area?
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Aug 19, 2010
I was using my Mac mini last night and it played audio fine. (I have it hooked up to my HDTV in the living room.) However, this morning I went to watch a standup comedian and the audio wouldn't play. I rebooted. Removed the audio cord and plugged it back in. Took the video cord and plugged it back in.
Audio cord: composite
Video: mini-DVI -> DVI -> HDMI
Nothing will play. There's no external speakers or anything, it's playing through the TV's built in speakers. Normal satellite TV will play audio as well.
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Jun 22, 2009
my macbook is only about 10 months old but my battery just started refusing to charge. the light on my magsafe lights green but the lights on the battery don't light. the battery icon in the status bar says (not charging). The battery says 0% and if i unplug the charger it dies instantly. do i need a new battery or is there something i can do?
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Dec 8, 2009
Recently my Safari has been refusing to allow pop-up windows to spawn, instead directing them to open in new tabs. Minor issue, to be sure, but really annoying to pop-out a google talk chat and having it open in a new, huge, tab instead of small window (better to multi-task that way). Same with Rhapsody, I'd like a small player on the side of the screen I can monitor, not a seperate tab.I'm currently running Safari 4.0.4 on 10.6.2. I have pop-up blocking disabled and Glimmer Blocker disabled. I also have Glims installed, but I have the option checked to allow new windows to open if a site requests one. Has anyone come across similar behavior in their safari and know of a fix? Am I being a knucklehead and missing something obvious?
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Apr 12, 2012
Again--my iMac desktop computer (10.8.6) is refusing to go to sleep, as it usually does automatically if left alone for a short time. Even when put to sleep manually, it pops on again by itself. Wasting a lot of electricity!
Info:
iMac 20", Mac OS X (10.5.6)
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May 18, 2012
I'm running Safari 4.1.3 under Tiger 10.4.11. (Machine specs below.)Â
Selecting either Show All Bookmarks or Show All History brings up only totally blank tabs labeled bookmarks:// in both cases, not the familiar window where one can organize and edit Bookmarks and view and search History.
Have already repeatedly trashed the Bookmarks.plist and the History.plist, as well as com.apple.Safari.plist in my user Library. (There are corresponding files in my root level Library. Also Repaired Permissions and Verified disk.Â
My default browser is Firefox, but I like to use Safari occasionally in a couple of sites.
2.5 GHz Power Mac (PPC) G5-Quad; 16GB RAM; mutant, flashed 550MHz nVidia GeForce 7800GTX 1,700MHz 512MB VRAM; ATTO ExpressPCI UL5D LP SCSI card; Mac OS X Tiger 10.4.11 and Leopard 10.5.8 boot drives; Spotblight, Dashboard and Time Machine permanently disabled; dual 22" CRT monitors; USB wireless 'n' available but connected to the Internet via wired Ethernet; FW flatbed scanner; 2 SCSI scanners (one tabloid-size transparency scanner and a film scanner); various internal & external HDs; FW Epson 2200 and Ethernet Samsung ML-2850ND printers; 2 X Back-UPS RS 1500 XS units.
Info:
PowerMac, Mac OS X (10.4.11), 2.5G5Quad,16GB,7800GTX 512MB, Tiger
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Apr 9, 2012
Every time I boot up my iMac (27 inch, OS 10.7.3), I receive an error message labelled "Mount Notification quit unexpectedly". When I open the detail box, theatre is a lot in there, such as "Process: Mount Notification [377]" or "Parent Process: vendorservice [360]" but nothing that helps me identifying the problem, since I am not familiar with OS X as I would be with Windows 7 for example. It says that the error message is sent to Apple, but I had it for a couple of months now, so I doubt anything will happen from that that end.Â
The problem seem to start when I installed Parallels, which seem to work otherwise fine.
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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Mar 26, 2012
last night I was using my computer just chatting with people, then all of the sudden it shuts off. Now it won't boot past the apple grey loading screen, and the fans slowly rev up till they are full boar, and I have to shut it off for them to stop. Â I've reset the PRAM, the SMU/PMU, tried holding alt and selecting my drive to boot to. None of these did anything, and didn't help at all. Â
I've heard it's a processer or logic board failure, or a HD failure, or something else. I'm ready to buy a new computer, I'm actually kind of sick of this one, I just want to know if I can fix it or not. I will probably take it to the apple store just to make sure, but maybe I can get an answer on here to know how to fix it or just to know that it's dead.Â
Info:
PowerMac
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Jul 25, 2010
so after my friend got his gmail account hacked I decided it was time for a new password. Updated it in gmail, on my iphone and iPad and no problems. However friggin' Mac Mail refuses to accept the new password. I even wrote it out in Text Edit and pasted it into both the gmail web interface and mac mail. Gmail web interface works just fine but Mac Mail refuses to accept the new password.
Is there any way I can fix this save for deleting my gmail account and recreating it(something I am want to do since I have a metric ton of messages).
Oy, Apple ignoring these tiny bugs is getting quite annoying....
For what its worth I'm on 10.6.4 and everything else is up to date.
Update, now I'm getting "The server returned the error: Web login required. (Failure)"
but it doesn't clear when I log into the web mail....
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Jan 22, 2008
Last night I encountered a problem with my seagate FreeAgent external HD/D. I right-clicked on the desktop icon to eject it as per usual and once the icon had vanished I pulled out the USB cable. However, I then got a message saying that I didn't eject the device properly and might have lost data, etc. When I plugged the external drive in this morning I found that it wouldn't mount. I am in a state of panic at the moment because it is almost 150gb of data that I really did not want to lose! I read in one of the previous threads that this is a common problem amongst macs but I wasn't able to discern if this was a permanent error and if it means my drive is shafted. I ran disk utility and this is what it came up with:
Verifying volume "disk1s1"
Checking HFS Plus volume.
Invalid node structure
Invalid B-tree node size
Invalid node structure
Invalid B-tree node size
The volume needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
I tried to repair it using disk utility but it wasn't able to do it. I am now using the demo of Data Rescue II to do a thorough scan which will take several hours but I'm wondering what options I have. Are there any other mac tools I can use? I am a total newbie when it comes to macs having only made the transition from PC to Mac several months ago and I don't know what tools I can utilize to fix this problem, if it even can be fixed.
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Jun 28, 2012
The trash is refusing to empty a couple of font packages, saying that they are locked. But 'Get Info' shows them not to be locked. I own permissions for the Mac.
Info:
iMac, Mac OS X (10.6.8)
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Apr 20, 2012
The other day when I got done putting my powermac g4 400mhz back together first a Message popped up saying you need to restart your computer that keeps popping up and now it won't boot past the apple symbol. What does this mean, and is there a way to fix it?
Info:
PowerMac, Mac OS X (10.4.11)
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Jul 2, 2012
Win i Press The power botten the light will not stay on but the fans are runing and the and the CD Rom has power butt the hard drive will start up iv try reset the PMU on the Logic Board and tryed all the keyboard command Option is ther aney iv missed ?
Info:Power Mac G4 (QuickSilver 2002), Mac OS X (10.4)
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Jul 4, 2012
I am attempting to startup a Mac G5 (Dual 1.8), but can only get a far as the gray screen with a flashing ?/Finder Icon. Machine will power up and fans will spin at max. Have tried to boot in various modes (safe mode, single user mode) with no success. Have tried to boot from G5 software install dvd (10.3) with no success.
Info:
Dual G5 1.8
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Nov 10, 2007
I installed a new hard drive on my G5. Trying to boot up from my leopard install CD. I get a blue screen with two arrows and the install cd icon. Plus the "clock" going around. It's been doing that for 30 min. What is that? Just when I was starting to feel confident in my HD installing capabilities.
Information:
Power Mac G5 1.6 ghz
Mac OS X (10.3.x)
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Apr 1, 2012
Having trouble booting up my old G5. If I'm lucky, I can hold down the 'C' while pushing the power button and it may or may not boot after several tries. Using tiger 10.5 (?) Can't remember the exact version because it isn't booting up anymore. Last time it did there was no keyboard/mouse recognition. Is there any key combo to try other than the 'C'?
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Apr 20, 2012
I just to start up my G4 1.25 Power Mac and it powered up and would not boot, instead of the normal audio chimes all I get is a splat on powering up.This machine has been operating OK until now
Info:
iPhoto '11, Mac OS X (10.6.7)
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May 11, 2012
The screen won't boot after startup tone and apple icon with pinwheel. The disc utility is telling me it cannot repair the corrupted disc and to "backup as many files as possible" but I do not know how to do this.
Info:
MacBook Air, Mac OS X (10.7)
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May 30, 2012
Had a power outage.My hopped up G4 tower with 2 - 200 GB EIDE drives on an EIDE PCI card. It crashed and one 200 GB EIDE drive didn't survive.(Yes it was on a UPS but the UPS ran dry and the G4 crashed before it could be gently shutdown) I removed the crashed drive and made sure the remain drive was jumpered as a single master drive. It wouldn't boot. All I got was the gray screen (no logo no paddle wheels, no start-up gong) I replaced the battery on the motherboard (commonly known as the PRAM battery)It wouldn't boot but I heard the start-up gong. I booted off the Leopard install DVD and ran Disk Utility repair disk and repair permissions. No problems were found. It wouldn't boot. Still gonged though. I installed Leopard onto an external firewire drive and connected it. Restarted holding down the option key to select a boot drive. Selected the Firewire drive. It wouldn't boot - gray screen only (and the gong). I installed Leopard onto the surviving drive and it appeared to install properly. It wouldn't boot (get used to this result). I erased the 200 GB drive and installed Leopard onto it. It wouldn't boot. I took my trusty PowerBook - booted it in target mode and then connected it to the G4 and booted off of it. Success! That worked. So I downloaded the Leopard Combo Updater and updated the Leopard on the 200 GB drive. Tried to boot off the 200 GB drive. It wouldn't boot - however now I have an Apple logo on the gray screen - still no paddle wheel though. At this point I was reseating PCI boards, EIDE cables, and all that stuff. Yes, yes, I reset PRAM a few times and so forth. It wouldn't boot. I pulled 2 SCSI drives out of another G4 tower and installed them and "option-started" the G4, selected a SCSI drive to boot from and it booted off an old version of Tiger. Once it booted, I could see the 200 GB EIDE drive and put files on it and everything! So, it's not like the drive is broken. I ran Disk Utility again just to be sure and it appears to be fine. When I select it as the start-up disk, it won't boot.Â
Info:
PowerMac, Mac OS X (10.5.8)
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Nov 3, 2007
My back up 1.6 ghz G5 power mac is misbehaving. I moved the system to another room and when I went to boot up, the only response I got was the fans running at normal speed - and then they started to slowly creep up to a very high speed. No hard drive activity, no monitor activity. I swapped out the memory for the original factory mem - same problem - reset the switch... nothing.
Information:
Power Mac G5 1.6 GHZ
Mac OS X (10.4.3)
1 Gig Mem, 80 Gig HD
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Nov 5, 2010
When I unplugg my pc vid card 5770 i can boot to mac but when i plug it in the power port on motherboard i can only bootcamp to windows is this normal?kind of a hassle everytime i want to play games because i have to shut down then plug in vid card to crossfire
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Nov 9, 2009
I have a Mac G4 with two hard drives installed. The Main drive (original) is a 38.18 GB. The Second drive - (I added later) is a 149.05 GB. It has Mac OS X 10.4.11 installed. This Mac does not have a DVD drive, only CD-RW. Also, I have no critical data on here - I use it as a utility machine. It is in a network with an iMac and Windows XP machine.
My problem is that the Main drive is now "full" - only 483 MB available. I have uninstalled all "non-essential" applications but find it often gives me a "Your Startup Drive is Full" message.
How can I make the second drive the "main" - boot drive?
OR, and I thought I knew everything - can I install applications like iTunes, Adobe reader, Microsoft Office on the second drive and run them from there? - If so, how would I do that?
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Mar 8, 2012
I'm attempting to install several PowerMac G5s with the same image. All the PowerMacs are the same vintage, and two of the four seem to work just fine. The other two have the same issue.Â
I created a model machine that's suitable for cloning: installed and updated all necessary software, configured system settings, and then used Disk utility to copy the model system to a read-only disk image. I then used the Disk Utility application to prepare the system image for deployment by Scanning the Image for Restore.Â
I then restored the image to hard drives with Disk Utility. I placed in the four HDs in the PowerMacs. Two of the PowerMacs booted without a problem, the other two won't boot to the restored image. I tried holding down Option key when booting, and option to boot to the drive never shows up. Also tried resetting the PRAM, but that didn't work either.Â
Info:
MacBook, Xserve G5, PowerMac G5, Mac OS X (10.5.8)
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