POWER MAC G5 WON'T BOOT UP AFTER GRAY SCREEN!!!!!!!

My wife was on my G5 one day and then came and told me it was messed up. When i turned my G5 on, the fans came on and it appeared that it was booting up. The computer got to the gray screen, had the little working icon under the apple logo came on, then it appeared to black out right around the the icon. The screen went black and then the screed said no connection.
Any help with this would be greatly appreciated.

Hi foleypopo, and a warm welcome to the forums!
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
See if it will boot up to a screen by holding the Option/alt key down at bootup.
Any results?

Similar Messages

Power Mac G5 won't boot with Lion?

After installing Lion, my early Intel 2010 Power Mac G5 won't boot. There were no problems for the first 2 days. The third day my G5 wouldn't boot at all. Not using Lion's recovery function, many attempts to boot from a previous system disk, and firewire target mode. The keyboard seems to be dead after attempting to boot except for the DVD eject key. All I get is a grey screen with an icon of a folder with a question mark within the folder. This icon blinks on and off continuously. Since the keyboard isn't working, I can't reset the PRAM, start in safe mode, or any other keyboard commands. The failed boot doesn't even get far enough for the Apple window to open. I replaced the hard drive and accomplished nothing except for spending even more money and time.
This is VERY frustrating! Has anyone else had a similar problem with booting after Lion't installation??
Thanks.

1) you have a Mac pro Early 2009, remember this. It avoids confusion here in forum
2) you're HDD's OS cannot be found by the firmware of the Mac hence it results to a question mark
perform the following(recommended to use a USB keyboard)
a) startup manager
press and hold option on startup. Do u see your HDD?
b) if you have a back up of your data then you can boot to the install disk and perform an erase and install
repairing the permission will not work since the disc's OS is different from the HDD's OS.

Mac OSx won't boot up after update to 10.6.7?

Mac OSx won't boot up after update to 10.6.7?

Hi Mike
This is called a kernel panic, similar to s 'blue screen of death' on Windows. When you say you reinstalled 3 times, do you mean the OS or the Update?
When does this kernel panic appear? You may have a hardware issue if it's happening on boot.
Taylor

Power Mac G4 Won't Boot after Installing 2nd Hard Drive and Additional RAM

Hello. I am using a Power Mac G4 (PCI graphics) that I bought a few weeks ago. It was working perfectly fine until I tried to add an additional hard drive and add more RAM to the machine. After I closed the case and plugged it back in, it won't start up at all. No sound, no lights, nothing spinning, nothing. I removed the added hard drive and RAM, but it still refuses to start. I don't know what happened. Hopefully it's not a logic board failure or anything else equally bad.

Welcome to Apple Discussions!
The PowerMac G4 PCI forum is over here:
http://discussions.apple.com/forum.jspa?forumID=586
I'll ask a moderator to move your thread. Try replacing the clock battery, and hitting the CUDAS switch.

Power Mac G5 won't start up after a security update, please help!!!

Hi all,
My Power Mac G5 version 10.4.11 keeps showing a black video, no beep, no start up chim, this occured after updating a security patch 2008-7 from Apple website, asked to reboot then I encountered this mess.
The powerlight is turn on with solid white color. My display also has its powerlight turn on with solid white. But not nothing happens, except the fan noise becomes gradually louder and louder. I wait for hours ... but ...
My system just won't start up. Although I tried to reset the SMU, reseated RAM...
I tried also to re-install the OS by CD but it's impossible to insert it to the DVD tray.
Any help is greatly appreciated, thank you for your time.
Sgmed.

Hi BDAqua,
After weeks of strugle I can use my MAC as normal, but everytime I shut it down, she cannot wake-up, I had to refer to your hints in order to start it up again. So right now I can use my MAC every day with "SLEEP" mode.
She just cannot RE-START or wake up after a SHUTDOWN.
Any suggestion is greatly appreciated, here under I pasted the log file retrieved from Disk Utilities.
(I tried also to reset PMU, SMU and PRAM but nothing helped. Perhaps she is in need of a brand new PRAM battery???
Oct 26 23:54:04: Disk Utility started.
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Preparing to secure free space : “Untitled”
Creating Temporary File
Securely erasing file
Creating Temporary File
Securely erasing file
Secure Erase Free Space stopped after 14 hours.
89.0% complete.
Erase complete.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents /MacOS/InternetUtilities, should be -rw-rw-r-- , they are -rwxrwxr-x
Permissions differ on ./Library/Application Support/Macromedia/Shockwave 10/Shockwave 10 Preferences, should be -rwxrwxr-x , they are -rw-rw-r--
User differs on ./Users/Shared/SC Info, should be 0, owner is 501
Group differs on ./private/etc/authorization, should be 80, group is 0
The privileges have been verified or repaired on the selected volume
Permissions verification complete
Repairing permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents /MacOS/InternetUtilities, should be -rw-rw-r-- , they are -rwxrwxr-x
Owner and group corrected on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents /MacOS/InternetUtilities
Permissions corrected on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents /MacOS/InternetUtilities
Permissions differ on ./Library/Application Support/Macromedia/Shockwave 10/Shockwave 10 Preferences, should be -rwxrwxr-x , they are -rw-rw-r--
Owner and group corrected on ./Library/Application Support/Macromedia/Shockwave 10/Shockwave 10 Preferences
Permissions corrected on ./Library/Application Support/Macromedia/Shockwave 10/Shockwave 10 Preferences
User differs on ./Users/Shared/SC Info, should be 0, owner is 501
Owner and group corrected on ./Users/Shared/SC Info
Permissions corrected on ./Users/Shared/SC Info
Group differs on ./private/etc/authorization, should be 80, group is 0
Owner and group corrected on ./private/etc/authorization
Permissions corrected on ./private/etc/authorization
Permissions repair complete
The privileges have been verified or repaired on the selected volume
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.5 GB (237,882,122,240 Bytes)
Used : 11.2 GB (12,042,969,088 Bytes)
Number of Files : 298,349
Number of Folders : 76,969
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
70 %)
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Oct 27 20:59:00: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.6 GB (237,949,358,080 Bytes)
Used : 11.2 GB (11,975,733,248 Bytes)
Number of Files : 298,359
Number of Folders : 76,970
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Oct 28 00:31:37: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Oct 28 18:50:53: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Oct 28 21:00:10: Disk Utility started.
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Repairing permissions for “Macintosh HD”
Determining correct file permissions.
Permissions repair complete
The privileges have been verified or repaired on the selected volume
Oct 29 19:55:10: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist, should be -rw-rw-r-- , they are -rw-r--r--
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player, should be -rwxrwxr-x , they are -rwxr-xr-x
Permissions differ on ./Library/Internet Plug-Ins/flashplayer.xpt, should be -rw-rw-r-- , they are -rw-r--r--
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Repairing permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist, should be -rw-rw-r-- , they are -rw-r--r--
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player, should be -rwxrwxr-x , they are -rwxr-xr-x
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
Permissions differ on ./Library/Internet Plug-Ins/flashplayer.xpt, should be -rw-rw-r-- , they are -rw-r--r--
Owner and group corrected on ./Library/Internet Plug-Ins/flashplayer.xpt
Permissions corrected on ./Library/Internet Plug-Ins/flashplayer.xpt
Permissions repair complete
The privileges have been verified or repaired on the selected volume
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.6 GB (237,921,976,320 Bytes)
Used : 11.2 GB (12,003,115,008 Bytes)
Number of Files : 299,521
Number of Folders : 77,045
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Oct 29 20:22:20: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Oct 30 17:14:49: Disk Utility started.
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.1 GB (237,409,587,200 Bytes)
Used : 11.7 GB (12,515,504,128 Bytes)
Number of Files : 299,790
Number of Folders : 77,188
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Oct 30 19:41:53: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Oct 31 20:48:58: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume Macintosh HD appears to be OK.
Mounting Disk
1 HFS volume checked
Volume passed verification
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.1 GB (237,362,040,832 Bytes)
Used : 11.7 GB (12,563,050,496 Bytes)
Number of Files : 300,773
Number of Folders : 77,858
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Nov 3 15:48:08: Disk Utility started.
Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions verification complete
The privileges have been verified or repaired on the selected volume
Name : Macintosh HD
Type : Volume
Disk Identifier : disk0s3
Mount Point : /
File System : Mac OS Extended (Journaled)
Connection Bus : ATA
Partition Type : Apple_HFS
Device Tree : first-boot/@0:3
Writable : Yes
Universal Unique Identifier : 2C999ACE-B114-3460-8FE0-4013F539F100
Capacity : 232.8 GB (249,925,094,400 Bytes)
Free Space : 221.1 GB (237,411,020,800 Bytes)
Used : 11.7 GB (12,514,070,528 Bytes)
Number of Files : 300,976
Number of Folders : 77,880
Owners Enabled : Yes
Can Turn Owners Off : Yes
Can Repair Permissions : Yes
Can Be Verified : Yes
Can Be Repaired : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : Yes
S.M.A.R.T. Status : Verified
Disk Number : 0
Partition Number : 3
Nov 3 16:12:13: Disk Utility started.

Power mac g5--won't boot, and I can't sleep

Hi all,
I'm hoping someone is awake and can help. My power mac g5, circa 2005, has always come with some problems, specifically, kernal panics. It's not bad RAM, but I have never tested the video card. Oddly enough, it seems to go down most often in the most in simple internet applications.
Today, it froze in Firefox and I cannot get it to reboot. It stalls/freezes in the gray apple screen. Called my IT friend, and he said to zap the PRAM. That brought it back up for a second, and then it froze again. I replaced the battery, no results.
I can't get it to boot in safe mode or even single-user- it freezes up as well. I certainly can't get it up long enough to load the boot disk.
It may be garbage...I can accept that...but it is holding hours of work. Will I be able to retrieve this??
Help
Message was edited by: nigelsupercat

Hi, I'm having same problem. G5 1.8 dual processor purchased March '05, won't boot. Not from cd either.
Took it to the apple geniuses and first was told it might be a bad board or processor and that I might as well just buy a new system. Well, I can't, because I still need to run some classic applications for business reasons, and because of that I'm stuck at Mac OS X 10.3.9. Anyway... I left my system with the apple geniuses and got a call 3 days later saying it was fixed @ no charge and that the 3rd party USB card was bad. They pulled it and said all was well.Great!, saving me $800 charge for a new board and over $430 for a new processor. So on the way home I buy a new USB hub get home start up and nothing! No change. Back to the Apple Store and after some testing this time I'm told it's definitely a bad hard drive. So, on the way home I buy a new hard drive. Get back, install the new HD and, you guessed it, can't format the disk, system won't boot from CD. BACK TO THE APPLE GENIUSES AGAIN! Now they tell me it's definitely the logic board. After 5 days I'm back where I started... except I have an old USB card that is most likely fine and new USB hub and a new HD I purchased because the Apple Geniuses told me they were bad! I asked them if they would apply a credit of some sort for the unnecessary purchases and my time (The closest Apple Store is 30 miles away), They politely said we appologize for the inconvenience, but no, we can't do that. I've been using Macs of all kinds since the early 1980's. And have never had one fail! Since I started looking into G5 problems, I've found many others with this startup issue. I feel there is a known issue with this series that apple is intentionally sweeping under the rug instead of issuing a recall or credit.

My power mac G5 won't boot up but has red flashing light and intense fan noise.

I Have a Power Mac G5 that flashes a red light that I've never seen before. There is nothing on the monitor and the fan noise is incredible.
HAs anyone ever had this problem?

Hi Michael,
It's normal for the fans to go full speed if the OS won't load to handle them.
Where is this red light, on the logic board, or front panel?
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.
http://support.apple.com/kb/HT1547
LED 1—CPU A: red—contact Apple or an Apple Authorized Service Provider
LED 2—Overtemp: red—contact Apple or an Apple Authorized Service Provider
LED 3—Power On: red—the main power is on
LED 4—Trickle: yellow—Power Mac G5 is plugged into the wall correctly
LED 5—Open Firmware good: green—no problem
LED 6—CPU B: red—contact Apple or an Apple Authorized Service Provider
LED 7—Checkstop: red—contact Apple or an Apple Authorized Service Provider

Power Mac G4 won't boot in OS X

I have a number of G4's which have been upgraded to Tiger. I am on the last machine running 9.2.2 and it refuses to boot in 10.4. I have tried the Tiger installation CDs, from a firewire drive with a good copy of Tiger on and from a new internal disk with a clean copy of tiger on (Installed via another Mac). All I get is the G4 sitting there with a blank screen with the fan running - no start up question marks or anything.
Does anyone have any idea why this mac won't recognize OS X at all?
TIA
PS Firmware update claims that it is not needed.

First let me ask you this, when you install for the first did your machine boot from the 10.4 or not.
And if you did, sounds like everything is ok if you have what you said you have
G4 350mhz, 512mb RAM, 40 gb drive with OS 9 ,80 gb drive with 10.4
(1) Have you check the Battery Type 3.6V Lithium maybe is out.
(2) did you removed the processor if is 350mhz or did you remove the video card.
Here's a link that might help you out that's if you haven't done it already.
http://docs.info.apple.com/article.html?artnum=301341
Here's a link about the Mac and choose the one you have ok
http://lowendmac.com/ppc/g4upgrades.html
http://lowendmac.com/ppc/yikes-power-mac-g4-pci.html
Here's a old PCworld link for Mac G4
http://www.pcworld.com/article/id,130282/article.html
And at last the link for Apple.
http://docs.info.apple.com/article.html?artnum=301341

Power Mac G4 won't start up after shut down

I have a Power Mac G4 (dual 1 GHz with 2 GB of RAM) running OS X 10.4.11. It has the mirror drive doors and was once referred to as the “wind tunnel”.
The problem is that it will not start up after it has been shut down unless I first push the reset button. I have tried replacing the battery and resetting the p-ram. When I try to start it without first pushing the reset button nothing happens. The light for the start button doesn’t even come on. But if I disconnect the power, open it up and push the reset button it will start up and run perfectly.
Thank you for any suggestions that you might have.

Thanks BDAqua, it does sound like a bad capacitor. The PSU is one that I put in a few years back when Apple was giving them out so as to reduce the fan noise. I kept the old one until last week when I sent it off to be recycled. I suppose it would be a tough job to find the bad capacitor and I doubt that I would have the skill to replace it even if I could find it. It's not like I really need this power mac since I have a Mac Pro 1,1 but I do occasionally want to run something in OS 9 and I do love this machine for what ever reason. There was remarkably little dust inside but I went over it with a can of dust remover.
Don

Mac Mini won't boot up after disconnecting it from iMac

I have disconnected my Mac Mini from the iMac I had it connected to, and now it won't boot up when I turn it on. Do I need to hold down a key combination to get it to boot from it's own operating system again?

I have disconnected my Mac Mini from the iMac I had
it connected to, and now it won't boot up when I turn
it on. Do I need to hold down a key combination to
get it to boot from it's own operating system again?
You should not have to hold down any key to get it to boot to an installed copy of MacOS, though if you hold the option key down, it should take you to the Startup Manager which will give you a list of available MacOS volumes it can boot from. If it doesn't show any, then you don't have a bootable MacOS on your mini.
Are you getting anything on your screen when you are trying to boot, such as a folder with a question mark?

Power Mac G4 Won't Boot

I have recently received an old Power Mac G4 MDD. It will not boot. When I press the power button, the light will come on for as long as I press the button. There is no chime, and the fans do not spin. Nothing happens except that the light comes on until I release the button. I have tried the logic board reset and the PMU reset. I am not sure of the operating system or anything about the processor as it will not boot. It does have a hard drive and a cd drive. Thank you for your help.

Hi cessna.ian, and a warm welcome to the forums!
First thing to try is replacing the PRAM Battery, 4 years is close to their lifespan, far less if left unplugged from the A/C...
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/
Then, How to reset the SMU/PMU on a Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939

Power Mac Lion Won't Boot! Fixes

Ok, I have the following: 2 x 2.66 Ghz Dual-Core Intel Xeon Power Mac that had 10.6.8, 4 GB MHz DDR@ FB-Dimm Ram over 4 slots. I had the original hard drive (Western Digital Caviar SE 250gb Ram HD model #WD2500AAJS-41RYA0) drive in this morning, and cloned it to a Seagate Barracuda SATA 1 TB 7200rpm 32 Cache Hard Drive. When I formated the new drive, I did it journaled. I took out the Western Digital and made the Seagate Barracuda the boot drive. I also installed a second drive, a Seagare Barracuda SATA 2 TB 7200rpm in bay 2. That drive is not journaled since I am storing video on it. Both of the new drives were formated properly and without issue. They worked all day without issue. This evening, I downloaded Lion without issue. It installed and rebooted. Everytime the computer boots, it goes to the "you need to reboot screen" aka "Mac Kernel Panic Screen" with four languages. Here is a link to the image: http://support.apple.com/kb/TS3742. Any ideas of what is happening or what I did wrong? Any thoughts on what happened? Any fixes? Help please. Do you need any other information?

OK. ALSO, I installed the OLD hard drive on its own and it boots fine. It seems like it can't find the new drive. Thoughts?

Power Mac G4 Won't Boot...New RAM Installed...

Hey there,
I was just given a Power Mac G5, QuickSilver. It looked relatively clean inside, and had all the neccessary components already installed except for the RAM. I went ahead and bought 3 PC133 SDRAM modules, but when I put them in, I hear one loud beep and it appears nothing is happening. I can hear the fans blowing inside, but I don't get anything displayed.
I know this one beep means the computer doesn't see the RAM, but could my battery be dead? Would that also cause the sound?
Anyone have any other tips or tricks?
Thanks in advance for any info. I'd like to salvage this bad boy if at all possible.
Cheers

Hi-
Apparently it was one of the launch models for the Quicksilver, or at least that's what I'm told.
That'll be this one:
http://www.everymac.com/systems/apple/powermacg4/stats/powermac_g4_733qs.html
do you know if there are limitations to how high I can go with hard drives?
That model/series (QS 2001) only supports up to 137 GB drives (128GB formatted).
You can use a 160GB drive with no worries regarding the "unused" portion.
I was kind of wondering if I could purchase a Serial ATA PCI controller card that would allow me to use SATA hard drives.
Of course you can.
This will also get rid of the capacity limit.
However, if you want to boot to the connected drives, not all support boot.
The best, hands down, controller that also supports boot is the Firmtek Seritek line.
The 1S2 is as cheap as they come:
http://eshop.macsales.com/item/Firmtek/FTST1S2/
I was also given an AGP G4 (400MHz) that was missing the hard drives, RAM, and battery.
All those parts are basically the same for the QS and the Sawtooth (AGP G4).
You can try a stick of your new RAM and any ATA hard drive (up to the same limits as the 733 QS) and see if you can get it going.
Order a new PRAM battery (or 2) from OWC while your at it.
Always nice to have a fresh one.
BTW, ALL QS processors are interchangeable.
That is to say, if you find a deal on any other QS processor (and heatsink), even a dual processor, it is a straight swap.
Look around my website, as there is a bunch of information that you might find interesting:
http://www.jcsenterprises.com/JapamacsPage/All_ThingsPPC.html

Power Mac G5 won't boot

Hi, I have a problem with my G5. When I plug in the power cord the power light lights up and turns off. But when I press the power button nothing happens. All the cables have been tested, but nothing. Any suggestions will be greatly appreciated?
By the way, it is 2004 model Power Mac G5

Hi,
Could be so many things, but from the sounds of it it's the Power Supply right now.
Have you blown the dust out lately?
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/

Mac pro won't boot: stuck on white screen, HD is new

My HD crashed (I think). Mac pro stuck on white screen for a while, then it goes to a black dos-like screen that says "no disc to boot.
I switched out my HD (I tested on different laptops and it works) and inserted the Mac OSX DVD but now it's just stuck on the white screen. I can't eject my disc either.
I hear 3 VERY small beeps (not the same beeps that states ram is missing/corrupt, which are louder. My beeps are VERY silent).
Fan works
No apple logo, just all white
CMD + R doesn't work, C doesn't work, option doesn't work, shift + ctrl + option doesn't work either
I'm at a loss
Help?
Thanks!
Macbook Pro Mid 2010, stock OSX (not sure which one that is)

Hey jlee12489,
Thanks for the question, and welcome to Apple Support Communities.
The following article provides troubleshooting steps for a computer that is not starting as expected. It may help to resolve your issue:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
Some of the steps included:
- Perform a Safe Boot
- Reset the NVRAM / PRAM
- Start from your Mac OS X Install disc; use Disk Utility
- Check your cables and power source
- Remove third-party RAM and internal hardware
- Perform an Archive and Install installation of Mac OS X
- Perform an Erase and Install installation of Mac OS X as a last resort
Thanks,
Matt M.

POWER MAC G5 WON'T BOOT UP AFTER GRAY SCREEN!!!!!!!

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