Power Mac G5 Blank screen and no chime on start up
I have a Power Mac G5 (June 2004). Recently when turning on the plug switch (at the wall) there was a power surge to the Mac which blew the internal power supply. I bought a reconditioned PSU and replaced the blown one (following online instructions). When I turned it on again, it booted up, but without the start up chime and a blank monitor screen. The monitor power light is on, but nothing appears on screen (black). Eventually the fans go crazy and only stop if I turn the Mac off. I can't boot up in safe mode as there is no chime and have tried command shift P R to no avail. After much searching I'm lost as to what to do next.
Anybody have any ideas?
Hello,
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/
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
How to reset the SMU/PMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
http://www.macusersguide.com/2009/05/resetting-pram-nvram-pmu/
Similar Messages
-
Chime, Blank screen and weird caps lock num lock behavior...?
So i get the chime, then the blank screen and nothing else except when I hold the num lock or the caps lock button it blinks rapidly. What does it mean?
It's 12 in 1.2Ghz,Hello,
Hard to say exactly what the problem is without some trouble shooting ...
Try booting in Safe Mode. Go here for instructions.
Mac OS X: Starting up in Safe Mode
Safe Boot is a special way to start Mac OS X 10.2 or later when troubleshooting. Safe Mode is the state Mac OS X is in after a Safe Boot.
The iBook HD may need repairing... here's help with that:
Testing and repairing a disk or volume
When you have problems with a disk or volume, use Disk Utility to test and repair it. Disk Utility also reports the S.M.A.R.T. status, which tells you whether your disk has hardware problems that will cause it to fail.
To repair a disk, you need an administrator's password. If you don't have one, ask an administrator to repair the disk with Disk Utility for you.
You can verify your startup disk with Disk Utility, but to repair it, you must start up your computer using another disk. For example, you can use your Mac OS X Install disk.
In addition, you cannot test or repair write-protected disks, nonrecordable CDs or DVDs, or disks with open files.
Close the files and quit the applications on the disk that you want to repair.
Open Disk Utility, and select the disk in the list on the left.
Click First Aid.
Check the S.M.A.R.T. Status at the bottom of the window. If you can't see the S.M.A.R.T. Status, be sure you selected the hard disk your volume is on, and not the volume itself.
If the S.M.A.R.T. Status is "About to Fail," back up your files on the disk as soon as possible and replace the disk.
If the S.M.A.R.T. Status is "Verified" or "Not supported," click Repair Disk to repair the disk.
If Disk Utility cannot unmount the disk, be sure you have quit any open applications and click Repair Disk again. If it still cannot unmount the disk, repair it just like you would repair a startup disk, by starting your computer from another disk, such as your Mac OS X Install disk.
If Disk Utility tells you to look for links to corrupt files in the DamagedFiles directory, some of those files are overlapping on your hard disk and are likely to be corrupt. Examine the affected files, each of which is listed in Disk Utility's output on a line that begins "Overlapped extent allocation". Most of these files have aliases in the DamagedFiles folder at the top level of the affected disk. If you can replace the file or recreate it, delete it. If it contains necessary information, open it and examine its data to make sure it has not been corrupted.
If Disk Utility cannot repair your disk or reports "The underlying task reported failure," try to repair the disk again. If that doesn't work, back up as much of your data as possible, reformat your disk, reinstall Mac OS X, and restore your backed up data. If you continue to have problems with your disk, it may be physically damaged and need to be replaced. See an authorized Apple dealer for more information.
Carolyn
Message was edited by: Carolyn Samit -
Mt iPhone shows unread messages that aren't there! I have held down the power and home buttons until blank screen and apple icon appear only to find it is cleared, but within minutes the unread messages reappear! Please help
Have you restored the iphone through itunes?
You say the unread messages aren't there but then they appear? -
Following a message saying that my Startup disc was full and advising me to delete some files, I deleted my trash but then apps started to fail. When I tried to log on again, all I got was a blank screen and a cursor, so I am unable to delete any more files. I am a Mac Book Pro virgin, help
How much free space do you actually have? Go to the Apple menu and select About This Mac... More Info... and click on the Storage tab. You should see something like this...
This will show you how much free space you have and what's taking up all the space on your hard drive. You may need to backup and trash some seldom used files, applications, etc. You have to drag them into the Trash and empty the trash to regain the space. A general rule of thumb is that you should have about 15% of your hard drive storage free.
Good luck,
Clinton -
My Iphone 4S keeps flashing between the Apple logo, blank screen and sign on screen. It will not let me sign on or power off. It started about 20 mins ago. One of my friends started having the same issue at the same time. How can I fix this?
Hi Bucky16,
If you haven't already done so, you may want to reset the iPhone:
iPhone, iPad, iPod touch: Turning off and on (restarting) and resetting
http://support.apple.com/kb/HT1430
If the above does not resolve your issue, the next best step will be to restore your iPhone using a computer with iTunes:
iTunes: Restoring iOS software
http://support.apple.com/kb/HT1414
Thanks,
Matt M. -
Blank Screen And Really Loud Beep On Startup..
Hi,
2 days ago I formated my iMac and installed fresh Snow leopard, after finishing installing and going through the software update, machine restart, then i got Blank Screen and Really Loud Beep then after 20 second got the gray screen and mac start normally, but this happening now each time i start up my iMac, and it is really irratating..... I start up from snowleopard disk and check Hard disk and permission; It is ok, then I did hardware test; and result is OK,
Please Please anyone know How to get red of this....Hi Eric,
No i didnt install anyhing or add anything; i checked Diagnostics:
Apple Hardware Test:
Last Run: 01/08/4011 21:08
Version: 3A157
Result: Passed
Power On Self-Test:
Last Run: 02/08/2011 00:14
Result: Passed -
Option-Command-P-R, produces, only, dark, screen, and, repeating, chime. Would, anyone, be, familiar, with, this, happening?
I would look in, Sys/Lib/Extentions, and, relate, the, specific files, that, I deleted, but I have, deleted, them all, on, all, my up and running, eMacs. Like, I said, they all work, fine, without, the ones, I, have deleted, and I would go so far, as to say the system is more responsive, on booting, and, "snappier" in every app that I use. (Me, Naval, trained, electrian) (first, part oif training, how to design, electronic, and, electric, circuitry) (and you must do this in a short time period, each module is timed, so I became good at it, top three in my class) So, I, see, in my, head, that, poor, HD, read, arm, sweeping, over, the disk, and, having, to, avoid, the Intel, stuff, that it, will, never read, and, it, annoys, me. Classically, to make A perfect install DVD would be quite, A, daunting, task, and most software companys, would like to keep their good program, writers, without, making them rich. There, is, A Leopard, Security, PDF, that, notes, the, uselessness of unused, software, on, A harddrive. Are you familiar, with it? if not I'll post it, or google Leopard Security to find it. It's on Apple's data base. I, would just like to get rid of the rest of the files not used, by the Power PC platform, while not causing A crash! Please let me know if you, come up with anything, thanks.
-
13" MBP died. Only a black blank screen and blinking lights are visible. Any ideas??
My friends MBP died the other night. He put it on sleep mode one night and the following morning, and when he went to turn it on the following morning it would't. Only a black blank screen and blinking lights. There is no sound or anything. BTW it is a mid-2010 MBP, no added hardware, everything stock. It wasn't custom configured, and I believe he upgraded to Lion earlier this year. I read somewhere that depending how quickly the lights are blinking could indicate a specific problem. Is this true? He is planning on taking it an Apple store, but figured we would try here first since it is a bit of a drive, and the warranty has expired. Any help would be greatly appreciated. We are just trying to get an idea of what we are dealing with. Thank you!
Looks like hardware problem.
Apple can fix it. Take it to Apple as soon as possible.
Mac start up seq:
http://support.apple.com/kb/HT2674 -
The application maps is not working. When I try to run it opens for a few seconds with a blank screen and then closes.
Try a reset by pressing the home and sleep buttons until you see the Apple logo, ignoring the slider. Takes about 5-15 secs of button holding and you won't lose any data or settings.
-
My iPhone is fully charged and just gives me a blank screen and will not turn off, what do I do?
my iPhone is fully charged and just gives me a blank screen and will not turn off, what do I do?
Reset the phone like the manual says: hold the on/off switch and the home button simultaneously until the Apple logo appears. May take up to 30 sec
-
Hi all,
I need help with my iphone4s.
When I turn on my iphone4s, the apple logo will show for a few seconds, and it will suddenly fade off to a blank screen, and not start up. It will then restart by itself, and the cycle repeats. Any suggestions on how I can troubleshoot this problem?
What seems to be the problem here?
thanks and regards
WanWanlucg wrote:
When I turn on my iphone4s, the apple logo will show for a few seconds, and it will suddenly fade off to a blank screen, and not start up. It will then restart by itself, and the cycle repeats.
Make sure you have the Current Version of iTunes Installed on your computer
iTunes free download from www.itunes.com/download
Then See Here > http://support.apple.com/kb/HT1808
You may need to try this More than Once... Be sure to Follow ALL the Steps...
Take your time... Pay particular attention to Steps 3 and 4.
After you have Recovered your Device...
Re-Sync your Content or Restore from the most recent Backup...
Restore from Backup > http://support.apple.com/kb/ht1766 -
when I click on a link to complete a form, or a link to take a closer look at a picture, I get a blank screen and it says at the top 'search bookmarks and history', at the bottom it says 'stopped' - what is this problem and why is it happening ?
Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]] -
I go to play on a game on my iPad it will load the game up and a minute later will go to a blank screen and then back to all my apps.does it everybtime? Why is that? What do I need to do to stop it?
1. Close all inactive apps in the Task Bar. Double-click the Home button and hold apps down for a second or two and tap the minus sign to close app.
2. Try a reset. Hold the Sleep and Home button down for about 10 seconds until you see the Apple Logo -
after resetting my phone to factory settings, it will not turn on. When i press the power button a white screen and black apple pop up. it stays on that screen and will not go to the home screen, it will just die. please help!
Make sure it is charged for about 10min using the adapter, then connect in recovery mode, explained in this article:
If you can't update or restore your iOS device -
Help I just get stuck with the blank screen and the white circle
help I just get stuck with the blank screen and the white circle after i erase all content and setting
i dont know how to do pls help.Try connecting the device to your iTunes library and restoring it. If necessary place the iPod into recovery mode using the instructions in this Apple support document.
iOS: Unable to update or restore
B-rock
Maybe you are looking for
-
Play Symbol To A Label From Wherever It Currently Is
Perhaps I do not understand this right How do I get a symbol to play from wherever it currently is to a label? Could be forwards or backwards This works fine - Play the symbol to the end sym.getSymbol("digit_02").play(); And this works fine - Play th
-
Install older version of Firefox for Mac OSX 10.4.11
I accidentally downloaded and wrote over the Firefox version I had with the new 7.0 version of Firefox after I read that my Mac OSX 10.4.11 is not compatible. Is there a way to download an older version, a compatible version of Firefox?
-
HT1725 How do I re activate my security questions
How do I re activate my security questions
-
2 Modems on the same ADSL line?
I have a NetComm NB5Plus4W ADSL2+ modem router through which I can connect wirelessly to my iMac, MacBook and iPhone. There also another iMac at the other side of the house which rarely gets enough signal strength to connect to the internet. And due
-
So I noticed this after the first update. I will be browsing on sites ( sometimes with more than one tab open, different sites each time) and suddenly the internet will go 'dead'. I can still do stuff with the mouse e.g; close firefox, click the tabs