PowerMac G4 won't power on after RAM upgrade

Hey all,
Had a friend of mine e-mail me with a problem. He recently attempted a RAM upgrade for his PowerMac G4 (sorry I don't have more specifics), he had 2x256MB sticks with an open slot and tried to put in a 512MB stick. When he did this, the computer wouldn't start (hit the power button and it lights up but the machine turns right off).
He tried leaving the computer unplugged for 15+ minutes as well as resetting the CUDA via its little grey button on the mainboard. Nada.
He also tried starting the machine with just the new RAM and putting the old RAM back in as it was ... neither would work.
I suggested it may be the battery on the mainboard, to which he has ordered and it waiting.
I was just curious if there are any other ideas?
-Tek

when you say bad power supply how did you come to that conclusion...i just had a problem where i attempted to install the ram as per instructions...it caught some sort of flat power strip inside the bay and pushed it into the recepticle..i know of people having problems with the ram seating so i pushed and pushed....and eventually broke the wires...now i have no power. i dont know what the wire was but from the power of deduction i realized it was important....as my macbook is now a brick

Similar Messages

KT3v MS6712 System Won't power up after RAM upgrade

hello this is my first posting to this forum and I hope someone might be able to help on this as I am totally stumped. I have been running my KT3V MS6712 mobo with 256MB since it was built. The manual for this mobo says it can handle up to 3GB RAM in any order or size. I have 3 DIMM slots and thought it would be more cost effective to just
purchase 1 DIMM leaving the other 2 slots free. So I decided to upgrade to 1GB and I bought a Kingston 1Gb PC2100 266MHz DIMM and installed it on my system. Now my system won't power on at all. When I press the power button on the PC, the CPU fan spins for like 1-2 seconds then stops. The system appears to be completely dead. Cos I thought the problem was down to the new RAM installation I thought better put my old 256 DIMM back, however I still get the same problem. I have tried swopping both DIMMS into different slots but still doesn't work. The system was working fine until I did the RAM upgrade. I tried resetting the CMOS by moving the jumpers around in case it was a BIOS issue, still hasn't made a difference. Dunno if its the PSU which has suddenly gone, however seems strange. There are no beeps from the system or lights flashing to indicate anything. I don't have
the D-Bracket installed either. I have also never upgraded the BIOS on this system as it has always been stable. The CPU is not overclocked. Has anyone had this problem before after a RAM upgrade? Hope I have given you enough information

Suntek is perhaps not the best of PSU makers, but a sudden collapse is not so common. You normally notice problems earlier.
I took a big beating last time I said this , but it is important that there is no power in the system when changing memory sticks.
It sounds a bit like the processor went away for holiday. Have you any data on the processor temperature? Is there any activity at all? Does the processor heat sink get warm?

6120c-1 Won't power up after Firmware Upgrade 3.70...

Had some issues, bad echoes with Bluetooth car kit was advised to upgrade phone Firmware to retify problem. Upgraded with success aparently now phone won't power up at all. Can anyone help?

06-Mar-2008 01:25 PM
orby wrote:
Had some issues, bad echoes with Bluetooth car kit was advised to upgrade phone Firmware to retify problem. Upgraded with success aparently now phone won't power up at all. Can anyone help?
Get it resolved at Nokia care
If my post has helped you please click the white star on the right

Aluminium iMac won't power up after shutdown

Hello All,
I have bought a 20" aluminium iMac for my parents a couple of weeks ago. It went extremely well in the first few days, but I got the complaint from my parents that it cannot power up after the proper shutdown.
It is very strange that it won't power up after it has been shutdown for a couple of hours, unless I unplug the power cord and plug it back in after a minute or so (reset the SMC)
Oppositely, I can power it up normally right after it has been shut down for a few minutes. But never overnight.
I have tried everything I know about like reset SMC and PRAM, as well as running apple diagnostic. Symptom still persist (though the diagnostic says nothing wrong with my hardware)
Is there anyone facing the same problem as me ?
Thanks
Jimmy

Thanks Guys.
I haven't called Applecare yet. However, I have reinstall the system and done a software update EXCEPT the latest imac software update v1.1 released recently.
See if anything good happen tomorrow and will let you guys know
by the way, it's really great that Mac retains everything including the Apps and Desktop setting after the reinstallation......... nothing has to reinstall except the OS itself
Jimmy

Mac mini won't boot after RAM upgrade.

Tried installing new RAM in my Mac Mini, 512MB stock to 2GB of Crucial. Followed the directions to a T, grounded myself the whole time.
Things I've tried so far:
1. Resetting the PRAM, no luck.
2. Holding option at start-up, shows no icon.
3. Holding shift, no luck.
4. Holding X, nothing.
How do I get it to accept a CD if it won't boot?

Welcome to Apple Discussions!
You clearly have a problem, but you don't describe exactly what that is other than that your mini won't boot after the upgrade. What happens when it starts up? Does it attempt to start and hang up on the grey or blue screens, or does it start beeping at you almost immediately after you try and start it up, and also flash the power light?
If the former, then you may have dislodged a connector while working inside the system, in which case opening it up and checking that everything is firmly connected would be the first thing to do. If the latter, then the beeping/light flashing is the system telling you it has failed the power-on self test and the pattern of beeps/lights indicates why. In your case likely the system can't find workable memory. In that instance, opening the system and ensuring that the RAM is firmly and fully seated would be a good step, and if the mini continues to fail, then replacing the new RAM with the original to test that the system will then start.
It is not likely that anything had damaged your MacOS install in the process of upgrading, thus normally no reason to need to boot to CD as a result of a RAM issue.

Iphone won't power on after screen replacement

So I've dropped my Iphone 4S once and screen showed blue vertical lines. I replaced the screen for about $120. After 6 months or so I dropped it again and the screen cracked. I decided to replace the screen on my own so I got a new one and replaced it, but the phone doesn't power on after the screen replacement. I plugged it on charger, did a hard reset but still nothing. I plugged it on pc and it was recognized by the itunes! As it was plugged on pc, I did a reboot again and it left itunes as if it was powered on and suddenly powered off. Still plugged in I tried to power it on again, it was recognized again by the itunes but the screen still wasn't working. Another thing is that it burns a lot without even being on charger or on pc, and I need to take the battery off.

Sorry. There's not much we can suggest. Apple won't touch that phone now.
Try looking for advice someplace like ifixit.com.

My mbp won't power up after update.

after running an app store update, (Xcode) my mbp won't power up and the battery lights are showing flat even though it was on charge over night.
the update was taking a long time, and it had a message saying something like deleting old files.
i went to bed and left it over night.
when i went back this mornng it had powered down, and the drained the battery even though it was plugged in.
now i can not power up, and i have tried the smc reset.
please help.
many thanks.

This is the standard Apple support article for your situation. If you cannot try another adapter to try, I suspect a trip to an Apple store genius bar is in your future.
http://support.apple.com/kb/HT3964
Ciao.

Rand new iPhone 5s black, dead, won't power up after ios 7 upgrade...held down top button, held down home button...dead. Was fully charged, working fine tell said yes to upgrade. HELP!!!

Brand new iPhone 5s dead, black won't come on after ios update...is fully charged, was working fine till said yes to upgrade. Did not watch process beyond seeing Apple logo appear, left it alone, came back, dead. Tried holding top button, tried home button, nothing...HELP!!!

If iTunes does not recognize your iPhone even if it’s plugged in, you may need to put it into DFU (Device Firmware Update) mode. If you have to put the device in DFU mode, you will most likely be unable to back it up.
Hold Power button for 3 seconds and then the Power and Home together for 10 seconds (exactly).
Release Power but keep holding home until the your iPhone shows up in iTunes.

Airport won't power up after updates 5.5.2 and 7.5.2

I updated this afternoon via Software Update: Airport Utility (to v. 5.5.2) and Airport Extreme firmware (to v. 7.5.2). Everything seemed fine, noticed no problems and later I shut down my main computer for the day.
When my wife came home later, she couldn't get an Airport connection on her MacBook Pro. In the process of troubleshooting, I went back to the Base Station and found it was off (no light at all). It simply won't power up at all. Unplugged it, replugged it, etc.
Seems like too much of a coincidence that my unit would have just flat-out died after these updates.
Anybody know what's up?

Thanks Bob, I'm afraid you're right. I didn't know that a firmware update could fry hardware like this! It's just too much of a coincidence to be a... well, coincidence. (Especially now that I see all the other people having problems today after this update.)
I've also reported the issue to Apple via the link you posted in another thread: http://www.apple.com/feedback/airportextreme.html

Satellite A200 PSAE6E won't power up after BSOD

Hi. (sorry for my english)
Last night i got BSOD (driver_IRQ_NOT_LESS_OR_EQUAL). After memory dump i restart notebook but it won't power up.
Fan start for 1-2 sec., i can hear some noise from DVD drive, power light is blue, same as power cord light, battery light is dark when notebook is unplugged from AC.

> {quote:title=Al-eX wrote:}{quote}
> hi keeslaff,
> take out battery and run the unit on ac-adaptor.
Already did that, same result
> check if hdd spins up (maybe hdd died)
i think it's spins (at least trying to spin)
> try to boot from a dvd/cd (install dvd of win)
can't do that, in BIOS first boot dev is HDD and i can't change it
i'll try to play with memory sticks if i find any screwdriver
Tank you
Message was edited by: keeslaff

Won't power on after checking battery for exchange program

This is so silly its not even funny.
I simply shutdown my 12" 1.5Ghz power book. Took the battery out to read the serial number, which by the way is one of the faulty ones. Then put it back in and now it won't power on.
Pressing the power button does nothing. Battery is fully charged, with AC connected it has the green light. Trying to power on with only battery, only AC has no effect. Resetting PMU, NVRAM unsuccessful.
Help! What could have possibly happened?
The warranty expired in May but I'm confident if I didnt have to check the battery I wouldn't be facing this problem. Do you think Apple will take pity on me?

If I have the battery out, if I hold the power button then when I plug in the AC I hear something like a capacitor discharging for about 2 seconds. Kinda like something spinning down.
Ring any bells?

Laptop won't power up after hard reset.

My laptop was having issues with keys(mixed keys) so I performed hard reset by removing the battery and the power connection then pressing the power button for 30 secs. But now my laptop won't power up.
Any suggestions will be greatly appreciated.
Thanks,

@BayOceanLake
Thank you for using HP support forum. I have sent you a private message. If you’re unsure how to check your private messages please click here.
Thank you,
Omar
I Work for HP

Dv7 3085dx won't power on after adding 2nd hard drive

I'm attempting to add a 2nd drive to my laptop (dv7 3085dx). The drive is a Seagate Momentus 750GB drive (ST9750420AS). I purchased the drive caddy and connector from Newmodeus. The laptop will not power on after the drive is installed in the 2nd bay. Everything is fine if the drive is disconneted.
Any ideas?

Are you absolutely sure you got the right caddy and cable from newmodeus? They sell several different ones for the dv7 series and they look similar but are not compatible with each other. I understand the reluctance to try hot-plugging it.

IMac won't boot after ram upgrade

For some reason, my iMac late 2013 3.4Ghz quad core i5 won't boot with new ram modules added. New ram is exact same specs as original that came with the iMac. I've tested the new ones on their own in the iMac, and the system boots up fine. Same goes with just using the original ram. But when I put all 4 together, the iMac doesn't boot up. Not even the chime.
Combinations I've tried are:
1-Old
2-New
3-Old
4-New
No boot
1-New
2-Old
3-New
4-Old
No boot
1-New
2-Old
3-New
4-empty
No boot
1-Old
2-New
3-Old
4-empty
No boot
1-New
2-Old
3-Old
4-New
No boot
1-Old
2-New
3-New
4-Old
No boot
The only combinations that work are:
1-New
2-empty
3-New
4-empty
Boot good
1-Old
2-empty
3-Old
4-empty
Boot good
I just got off the phone with Apple, and they are saying all modules have to be the same size. ie. all 4GB or all 8GB. Can't mix and match sizes. Which is strange, because I've never heard of this. My Mac Pro has different speed ram modules, with different sizes in it. As long as I install ram in pairs, it runs like a charm. I've even heard the new iMacs don't have to have ram installed in pairs.
I'm wondering if slot 2 and 4 are maybe damaged? I haven't tried using just slot 2 and 4. To my understanding, you have to use 1 and 3 first. Can anyone confirm this?
Also, I've read a couple of people had to wait 30 seconds for the chime when they installed new ram in their iMacs. I didn't wait 30 sec to see if it would boot. Never heard of any Mac taking 30 sec to just chime in. lol Has anyone else experienced this? Is there a fix? Tx.

CLICKY CLICK---> iMac: How to remove or install memory
Or
Apple>About This Mac>More Info>Memory: Double click "Memory Install Instructions" at the bottom right of window.
my iMac late 2013 3.4Ghz quad core i5
Conflicting info. Your system profile shows: Mac Pro, Mac OS X (10.6.8). Please update/correct.

My phone won't power up after updating please help

My phone will not power up after updating...it's been three hours...please help

Hey laurelletoo,
Welcome to Apple Support Communities.
From what I gather, there’s an issue turning your iPhone 5 on after updating it. Take a look at the article below and try running through the suggestions that it provides.
If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support
Take care,
-Jason

PowerMac G4 won't power on after RAM upgrade

Similar Messages

Maybe you are looking for