Suspected power suply problem

I am running an xp 2400+ on a km2m-l mobo. My PSU is only 145W (came with pc I bought 3 years ago).
I have been having problems getting the pc to start first time. I have to let it go to xp login screen, turn it off at blue screen of death then restart it to get it working right.
Now I can't even see the bios boot screen - the monitor doesn't even turn itself on from standby until xp login screen appears. When I turn it on it seems like the monitor isn't recieving anything at all, it only comes on quite a while into the login.
Is this definitely a problem caused by PSU? I have a new 400W PSU due to be delivered on Thursday and want to know if this should sort the problem, or if it is maybe the monitor (3 years old as well) that is knackered!
Any help would be great! Cheers!

Oops, 145W? Wouldn't even be enough as combined power...
You need about 20A/3.3V, 30A/5V and 180W combined power (AMD-suggestion), but I think even these specs are very low.
More than 25A/3.3V, 35A/5V, 18A/12V and 200W combined power should do the work for the rearest future.

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Power supply problem a little better after unplugging imac for 24 hours

Hello,
I'm currently having power supply problems (at least I hope it's the power supply and not the mother board), similar to many others I've seen on these boards. What I've noticed is that if I unplug my iMac for about 24 hours I can get it to run again for a little while. Unplugging it for a few minutes (or even 8 hours) doesn't seem to help. My iMac won't get much further than the starting chime before it loses power. But it seems to me that unplugging it for 24 hours has gotten me between 5 days to 5 hours of use before I unexpectedly lose power.
Is there anything to account for this or am I just imagining things? Ultimately, I don't think the answer will help me much, but I am curious to know. I'm taking my iMac to a Mac Genius tomorrow to see if they can help diagnose the problem. I saw a little hit in my video today, which was a first, so I suspect the problem may be getting worse. I'll probably be buying a new power supply soon.

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Hello all,
Got this "project" iMac, have no knowledge of its history. Here's what's going on:
When I first got it, it would take 3 or 4 tries for it to fully boot up, on the first try it would shut off after a second or two, the next try it would get a little further along before shutting down and finally on the 3rd or 4th try, it would boot up completely.
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So I then checked the firmware, which was the latest version (4.1.9). Then I did a PRAM reset, which helped, followed by a PMU reset. I did the PRAM reset several times when problems cropped again, and have done the PMU reset twice, resetting the clock both times.
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I just need some feedback here before I purchase a replacement motherboard.
Also, can the video board/card be replaced separately?
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iMac 600 SE Mac OS X (10.4.3) 600MHz, 384MB RAM, 40G HD
iMac 600 SE Mac OS X (10.4.3) 600MHz PowerPC, 384MB RAM, 40G HD

flaash...
In your situation I believe 2 components need checked first. PAV board and the CRT. Or essentially anything shared by the 2 items, such as the CRT yoke/gun board.
As far as the logic board goes, the video chip-set is part of it (soldered in) and not repairable. Those parts rarely "weaken" (normally just die) so I would be less likely to suspect them.
...Ron

Ask your question.MC508LL/A power supply problems, Ask your question.MC508LL/A power supply problems, Ask your question.MC508LL/A power supply problems

I have just replaced my older IMac with a new one because of a cronic power supply problem. Now I see this one is doing the same thing. Is anyone else having the same issues with their MC508LL/A.

I'm with babowa there ... I would suspect the power souce, not the PSU. Where you live could be an issue depending on how reliable and 'clean' the electricity is to your home. If that is ok then it could be the wiring in your house ... if it were mine, I'd need an electrician to check it out.
Personally, I've had computers hooked to my electric service since 1995 and no UPS (despite recommendations) and never encountered a problem with the computers ... many electrical issues (brown outs, outages, etc), just been fortunate they didn't affect my machines.

Power management problems

A couple of weeks ago I installed quite a few of the patches in the recommended list.
Since then, I get the following message repeated continually in the console window:
DPMSSet: Invalid argument
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I'm runnig solaris 8 on a ultra 5. I looked in the power.config file and in the startup scripts, but couldn't find any reference to "DPMSSet." Any ideas on the cause and solution of the message?
I never use the powerd daemon, so killing the process seems to eliminate the messages.
Thanks,
Gerhard Kuhn
[email protected]

Hi,
Check whether all the supported patches are installed.
Regards,
Dharani
SlashSupport
A couple of weeks ago I installed quite a few of the
patches in the recommended list.
Since then, I get the following message repeated
continually in the console window:
DPMSSet: Invalid argument
Power management problems
I'm runnig solaris 8 on a ultra 5. I looked in the
power.config file and in the startup scripts, but
couldn't find any reference to "DPMSSet." Any ideas on
the cause and solution of the message?
I never use the powerd daemon, so killing the process
seems to eliminate the messages.
Thanks,
Gerhard Kuhn
[email protected]

Hi, I'm having a macbook pro here and it spoiled after a year of using, i though it was the power adapter problem because when i try to charge my mac battery that is depleted it shows a very dim light and my mac won't start up

Hi, I'm a macbook pro user but recently my macbook just spoiled, i though was my power adapter problem because when i charge my mac battery that is depleted, it shows a very dim light and my mac just won't start up, even i bought a brand new 80 euro power adapter it still give out the same result.

when I switch it on, the little led light it up and u can hear the fun running and after 5 to 10 seconds switched off again / ive got all my recordings in there
Try Resetting your Mac's PRAM and NVRAM
If that doesn't help, try Resetting the System Management Controller (SMC)
in really disappointed with apple,
Serge... you are aware that you are responsible for backing up your importanta data correct ?

G4-450 dual back from repair shop: new power suply shuts down on its own!

Hi
My G4 450 Dual died on me a few months ago, i went to a Apple authorized repair place and was charged over 200 euros+ for a new Power Supply, Obviously they never tested the computer at all before installing it, i know this because when i took it home it started shutting down by itself.
When i took it back to the guys at the shop i was told that it was on all night and it does not shut down, but yet the firewire bus was dead and its due possibly to the logic board and would need to be replaced!
They tell me this after they installed a power suply and charged me money when i asked them to give me a estimate first, now i dont want the pwoersupply all together, do i have the right for my money back for the power supply, i agreed to pay them to test it for the charges of a hour.
please advise anyone..

You are definitly entitled to your money back, they sound like cowboys...

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Hi , Welcome to the HP Forums! I noticed that you are having power up problems on your HP 7520 all in one printer. I am happy to look into this for you! Please try the steps within this guide, The HP Printer Does Not Turn On or Respond When the Power Button is Pressed. As it deals with power related issues. (Even though the guide title may not match your issue, I believe the solutions will help.) Hope this helps! “Please click the Thumbs up icon below to thank me for responding.”

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Hi guys,
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Hi Sanjana,
Welcome to Lenovo Community!
I’m sorry to hear that the Power button is not working as expected in your G750 Laptop. I would suggest you to perform the Flee-Power, below are the steps to perform the same:
Remove the battery and any other peripheral device connected to the computer.
Hold the power button for 10-15 seconds and then connect only the AC Adapter and try to turn ON the computer.
If the issue persists even after performing Flee-Power, I would suggest you to contact our Technical Support for further Assistance to get the details of the nearest Authorized Service Center to get the issue analyzed.
Click here to open a link where you can select the country and get the exact contact support number. I’m sure they will be a great help.
Do post us back for further queries.
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Shiva Kumar
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Power Button Problem NO MORE HP!!!

Tried everything to fix my power button, but no way,NO MORE HP.
Today, one of my friends also had power button problem, even his laptop was one of the newest model.

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10.4.10 power update problems

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Hi, Mike.
You might want to search or post on the "Microsoft Messenger for Mac" group you can find on the Microsoft Mac Support - Newsgroups page. These are Google Groups with active participation from MS Microsoft Messenger for Mac users, including a variety of expert users.
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Dr. Smoke
Author: Troubleshooting Mac® OS X

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Joel Gunn
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Ati Radeon 7500 AIW
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Aopen Modem
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Hi,
Check whether all the supported patches are installed.
Regards,
Dharani
SlashSupport
A couple of weeks ago I installed quite a few of the
patches in the recommended list.
Since then, I get the following message repeated
continually in the console window:
DPMSSet: Invalid argument
Power management problems
I'm runnig solaris 8 on a ultra 5. I looked in the
power.config file and in the startup scripts, but
couldn't find any reference to "DPMSSet." Any ideas on
the cause and solution of the message?
I never use the powerd daemon, so killing the process
seems to eliminate the messages.
Thanks,
Gerhard Kuhn
[email protected]

MOVED: K7N2 Delta Upgrade Power Off Problems

This topic has been moved to AMD SocketA based board.
K7N2 Delta Upgrade Power Off Problems

Thanks for the various suggestions. I can confirm:
- 4 pin cpu power plug connected
- front bus frequency changed to 200MHz, processor now recognised correctly as Athlon xp3200+
- I have been assured the cpu has not been overclocked
However power off problem persists. System shuts down after approx 1 minute whether i am in BIOS or start initiaiting xp repair from CD. As the system shuts down after such a short time the xp repair will not complete. The system wil not power on again until at least 15mins has elapsed then promptly powers off again.
I have fitted the D-bracker diagnostic tool and this shows 'operating system booting', ie four green lights.
I note from the motherboard maunal that a cpu thermal protection system is installed for the Athlon cpu platform. If the mechanism senses an abnormal temperature rise it automatically shuts down the system. As noted in my original post the system is powering off with the cpu temp at <40 deg C. The cpu warning temp in the BIOS PC health check stsus facility is set at 60 deg C so do not think this is the issue?
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MSI K7 N2 delta (MS-6570)
Athlon xp 3200+ (AXDA3200DKV-4E)
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[PT880-Neo LSR]Power supply problem

Hello,
We've installed the new motherboard today, it model is PT880 Neo LSR. Well we've got everything plugged in, but when we try to turn on our computer it doesn't turn on.
There is a case switch, but when turn on, the fans work for like 1 second then it stop.
I've tried the Troubleshooting guide on the website, and studying the Manual, but I could not find a way to fix this.
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Thanks

Quote
Originally posted by DarkDuelist
yea, it comes with the 4-pin atx1 connector and 20-pin atx2 connector.
But i just exchanged another mainboard, and still not work. the first time i test it, i only plug the 4-pin and 20-pin connector into the mainboard and it worked. i thought the problem was solved. so i put everything else in (cpu, hdd, cd-rom, dvd-rom...) then test it again. I only heard a sound psssst, and nothing run. I tested it many time and it still not work. Then I UNPLUG the 4-pin connector from the power supply to the mainboard, and test again, this time, only all the fan RUN except the the fan in the power supply DID NOT run. Is it because that the power supply got problem? I used another power supply 420w to test but nothing run either.
MATSONIC motherboard MS9087C
DDR 400
Intel celeron 2gh 400 fsb
Macron 350w power supply
The psssst sound----sounds like something shorted out. Pull everything out and put it back in with a different PSU.
Don't put a hard drive or floppy in-----just CPU, RAM mobo, vid card, fans, PSU-----see if it will post.

Suspected power suply problem

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