Random sleep while working without reason despite power settings always ON hibernation disabled.

For the last couple of weeks the computer started to go into sleep or hibernation mode, at random times, without warning message and no reason as the power settings have hibernation disabled and all other power options, including sleeping are set to "never", or always ON. Also it happens either 5 min after booting or an hour after, even when using applications and having open windows. The only way to get back to using the computer is to do a forced shut down from the power button and then reboot.
Computer has been working fine for years. I have Windows update running daily, updated antivirus and no registry issues. This is getting very annoying, please help with solutions or suggestions. Many thanks for your time.

In Case it may help, here are some specifications:
HP Media Center PC m7250n
PentiumD 820 (S) DC 2.8 GHz:
800 MHz front side bus
Socket 775
Chipset: Intel 945P
Motherboard: Asus P5LP-LE
HP/Compaq motherboard name: Lithium-UL8E
Hard drive: 250 GB SATA 7200 rpm
Memory installed: 3GB DDR2 SDRAM
Video graphics: ATI Radeon x300se
128 MB DDR memory. I/O Ports: Composite, S-Video, VGA
Operating System
Microsoft Windows XP Media Center 2005 with Update Rollup 2
Microsoft Service Pack 3
Power Supply: HP-D6057F3R 300 W.

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Gary,
This is an example fo my console logs!.
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PKU,
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Cheers!
DALE

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Macbook Pro Early 2009 Randomly Sleeps / Black Screen While In use

My macbook pro Early 2009, randomly goes to sleep while I am using the computer, I first noticed it occuring while I was using the mini display adapter to a computer monitor, and using a second monitor and watching a movie, the screen would go blank and I would have to wake it from sleep for it to come back on, sometimes closing the lid, sometimes pressing the trackpad, or keyboard to get it to work again, sometimes it would go back to sleep within 1 minute of waking.
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I can see Icons like, brightness, and sound, when adjusting the levels, but screen is black behind the icons
The mouse pointer cursor is visible but the screen is black
I can move the mouse and hear system sounds, but screen is black. Now I have to actually restart the computer because It seems like I cannot wake it up at all.
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I SMC reset and PRAM reset, [control]+[option]+[shift]+[powerbutton] while computer is turned off with power plugged in
and after that failed I tried pressing [Option]+[Command]+[P]+[R] before startup chime, chime repeat let go of keys and it booted normally.
Then computer randomly sleeps while in use, while using safari and it has happened 3 times within 2 minutes of typing this.
I have downloaded a program called InsomniaX, and activated the disable sleep for Lid and Idle, but now the screen will randomly just go black and then turn back on, sometimes it will just black screen for 10 seconds and come back on, altho after changing some more of the settings It appears to be not as frequent. It hasen't gone to sleep since writing this entire paragraph, so thats a good sign.
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Just thought Id document this, will let you know what happens after the diagnostic, I tried apple support, and they said I did more than they would have done, so he couldn't really tell me anything besides take it into genius bar, (is that what its still called) and have them run diagnostic, [note its different than the hardware test on the cd]
and my computer screen goes black again, wow..

Hi pictureswithPS, welcome to Apple Discussions!
1. I have an original late-2008 unibody MBP that was purchased a week after the introduction. I have never had a single "black screen of death" ever, and I do some gaming under OS X on my machine. The heat issues are, in my humble opinion, greatly exaggerated. Does the machine get warm? Yes. However, any computer with this much power in this thin of an enclosure is going to get warm. Mine has never crashed, frozen, black screened, etc. once.
2. I don't think PS is particularly intensive on the graphics card. It may use the graphics card, yes, but I don't think it will be quite as intensive as a 3D modeling application or 3D games. I would doubt you would ever run into problems anyway.
3. Lastly I am aware that their are tools to manage fan speed behavior - as a workaround to cool down temperatures. Using this software would it void the warranty that is provided by Apple?
No, it wouldn't likely void the warranty. However, if your fans die prematurely as a result of running them at high speeds for extended periods of time, I doubt Apple would be especially happy about replacing them. I do not use any 3rd party tools to manage my fans, and never will. It is simply not necessary.
--Travis

Win7 hibernating randomly despite power management settings.

So I finally replaced the WinXP "wallboard" computer last week with a Win7 based box. The computer is used to drive two TV screens and displays multiple console windows for keeping an eye on a mainframe, the TV's are set to turn off
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The box is running our SOE, which includes a SCCM delivered power management profile which (by default) switches off the screen after 15 minutes and hibernates after 30 minutes. While waiting to be added to the "wallboard" profile (everything
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Ultimately, this is better addressed in a Windows forum because its Windows that is enforcing the policy and not ConfigMgr. ConfigMgr has done its job and applied the policy, what that policy does is up to Windows.
Jason | http://blog.configmgrftw.com

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Hello,
I have a MacBook Pro 13" from 2010. It's running Lion with all the latest updates.
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I restarted and when it's booting I see the white bar, as if it's trying to recover from the last crash, but about 10 seconds into booting, it just turns completely off. I never even get to the login screen. I left the laptop off for a few hours. I tried again, same thing over and over. Laptop completely turns off after about 10 seconds into booting.
I also have windows 7 installed over bootcamp, so I tried loading that, works without probem! I am writing this post from Windows 7 now. I opened up windows explorer and had was browsing through the Mac partition, it all works, I get full read access. Guess it's not a hardware issue then -phew!
I have no idea what I can do to fix that problem since I can't even get to the login screen.
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Can it be a Kernel error? Or some kind of error while it tries to recover from the last crash?
Is there any way to tell Mac not to try to recover from the last crash and just to a clean boot?

Will repairing the internal HDD delete access to Windows 7? that's that I am worried about, because if it deletes the windows partition and won't fix the mac partition, then I am screwed, then I can't boot into anything.
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My Mac is waking up from sleep without reason.

So this is what happens:
Sometimes I send my iMac to sleep and then I go away, but after I return, I've noticed the hard drive is working as if the computer were awake, not sleeping. For some reason it is waking up.
Sometimes I'm sitting at my office, and then I just hear the hard drive started buzzing, just like it does when it comes brack from sleep mode.
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Does anybody know it?

First: reset the > System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Second: check for a loose power plug and/or have an electrician check your homes power circuits, because it sounds as if your iMac is loosing power and then restarting when the power is restored.
Lastly: to prevent the iMac from restarting when there is power problem, go to: Apple / System Preferences / Energy Saver and uncheck the box for "Startup automatically after a power failure" that way the iMac will remain off when there is a power problem....

HP XW4600 Vista freezes randomly while working (no specific program or time)

Dear sirs,
A customer of mine is having issues with 4/5 identical HP XW4600 PC's in their company which are running Windows Vista. After some time the computer just freezes. Nothing can be done, only a hard reboot can bring the PC back to life.
After checking the eventviewer, I see that nothing is reported on the time of the freeze. Only when the system boots, it states that there was a cold reboot, but that's it. There is no special software installed on the computers (MS Office 2007, Archicad, autocad, java). First it started occuring with two PC's and now it's with 4/5.
I alraedy did a clean install of Windows Vista because the PC was given to another user, but still the same problem. I updated the firmware of the chipset, GPU, Bios, HDD with the latest drivers. Even tried installing different drivers for the GPU, but this has no effect. The system randomly freezes while using different programs.
I really have no idea what to check anymore. I already did a stresstest and drove the hardware of the PC to its limit and no freeze occured then.
What else is there to do? Is this because of a specific update from Microsoft or just the interacting between Windows Vista and the underlying hardware? Has someone else from HP had any complaints about this problem?
Thanks in advance.
Here is some system information about the computer which recently has been having issues:
1.
HP XW4600
Productnumber: KK508ET#AK6
Serialnumber: CZC9167GF6
OS: Windows Vista SP2 x64
GPU: NVIDIA Quadro FX 1700
RAM: 8GB
CPU: Intel Core 2 Quad Q9950

Hi Silencer001:
I understand that Vista randomly freezes for not apparent reason. I have included a link to "HP PCs-Computer Locks up or Freezes", although it is for Windows 7 you should be able to follow the same steps.
http://goo.gl/lgSULB
I hope this is helpful. If you require further assistance please reply back as I am here to help.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Random sleep while working without reason despite power settings always ON hibernatio​n disabled.

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Random sleep while working without reason despite power settings always ON hibernation disabled.