Sleeping mode doesn't work

When I will wake up the computer by pressing a button of the keyboard the computer turns off and after that it will not start up with the on/off button at the back of the computer (brand new mini mac late 2012 with Mountain Lion). What's wrong?

Yes, I have this problem also.
It has been a problem since I bought it in November. It also has a tendency to shut itself off when it is asleep (before I try and wake it up) and the power button is also not responsive at those times.
"Resetting the SMC" from the support article essentially means unplugging it, waiting a few seconds, plugging it back in and then waiting a few seconds before turning it on which you are probably already doing to get it back on.
I can't offer you much advice. I took it to support at the apple store and they changed the logic board but it did not solve the problem. I have also reinstalled the operating system to no avail. Apple seemed to think that it wasn't a problem with the power supply because it is only shutting down when it is asleep. But I don't really know what to think of that because they were wrong about the logic board. Part of the difficulty I have had is that it is intermittent and it invariably doesn't happen when I take it in.
To be honest this has just been one of many problems I have encountered with this machine. I still have the video blinking out issue which appears on this forum as well as the usb3 wireless interference / shielding issue (solved only by not using usb3 to connect my external drive).
I have therefore learned to live with it as it is only intermittent. It is annoying though as it means that reliable connecting remotely to it when I am away will not be possible.
If you have any luck diagnosing your problems please post back here because you are the only person I have seen with this issue.
Good luck.

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You've been so great, I want to thank you for all the help over a very frustrating day. Last evening, I redownloaded and installed the fresh copy of Mountain Lion. The problem remained. After installing the new OS 10.8, any clicks on a web page (Firefox browser) didn't open the page, but instead made a copy of the page on the desktop. Felt it must be hardware degrading, so I set up a case with Apple support for today. Early in the diagnostics, I had swapped out for a corded mouse and the problem remained. As a last try, I changed out my wireless mouse for a different wireless mouse. That seems to have done the trick. My Logitech mouse is incompatible with OS 10.8.
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.../awards rkaufmann87 500 points!

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Hello,
I have a problem with my Powerbook G4; when i connect the G4 with another G4 via firewire, one of this Powerbooks shutdown unexpectly and wont boot again...
i had to make a fesh install of Mac OS X Leopard (again), to try solve this issue; after this the boot is extremely slow and stays in blue screen by around 5 minutes.
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Have you tried to reset the PMU?
http://support.apple.com/kb/HT1431

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The sleep key doesn't work on my HP SK-2061 wireless keyboard. How do I get it to work?

Hello @SunLovinGran,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I have read your post on how your wireless keyboard's sleep key doesn't work. Is your computer able to enter sleep mode by itself after a certain period of time? Are you able to enable sleep mode using a different keyboard?
In the meantime, I recommend following the steps in this document on Wireless Keyboard and Mouse Troubleshooting. This should help diagnose any possible issue with how keys or buttons are input using your keyboard.
Please re-post with the results of your troubleshooting, as well as the requested information above. I look forward to your reply!
Regards
MechPilot
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 right to say “Thanks” for helping!

Hello. My mac pro early 2008 restarts after sleep mode and it works slower. I tested it with apple hardwear test and it seems to be ok. Thank you.

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Try this:
clone your system and repair it with Disk Warrior instead
Or try a clean test system install on another drive
A must: SmcFanControl 2.2 - a mere 400 rpm extra to keep air cooling up
Try to run w/o externals. MyBook included.
Is that a 7200.11 1TB? they had a lot of issues.
Run AHT off your OEM DVD.
2008 had to have EFI and SMC updates to deal with freezes on wake from sleep, and like all models, high inrush current. Hopefully you have a UPS and is 1500VA unit.
When you do hard restart from power button, you almost certainly add more directory errors and to files requiring immediate attention to repair and rebuild the directory; and to scan and repair and delete cache and temp files and folders. A must. Invest in bootable backups SuperDuper along with Disk Warrior (or TechTool Pro 6, maybe Drive Genius 3 but I'd rate that #3).
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Try to rule out everything and then add back one at a time.
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Im not sure if you are on the right forum because this forum is for Toshiba computer systems but lets see if someone with the same device can help.
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Hello folks,
First, I have no idea whether I should post here or in the NVidia forum.
I have a 790FX-GD70 motherboard with the 6 Core AMD processor, plus 16GB memory, OCZ500MXSP PS
Most everything is working perfectly except for putting to sleep (pw stays on) and Live Update 5.0.077 doesn't seem to work properly (posted in a previous msg).
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Thank you

Quote from: Stu on 12-February-12, 19:33:53
Check in your BIOS settings that Sleep/suspend mode is set to 'S3', and not to 'S1'.
Thanks very much!
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Next step, Ubuntu.

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I restart the iMac and hold 'option' to show the hard drive list, and sure enough the Mac Book Pro hard drive appears. I select it, and this lovely icon greets me.
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Thank you Jack!
It is indeed updated to 1.5 - I just didn't notice, since I had the full-logo thing on.
I also updated the drivers, but unfortunately that didn't help. :-(
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To be honest, I don't think it has anything to do with hardware. The drive doesn't work properly on this PC (MSI / Vista) but does on my laptop (Dell / XP), but it has to be checked...
Basically, it keeps throwing 0x8007045D I/O errors, but I can see noone in here has had similar problems.
So, thank you for your extremely swift replies and very great help!
Regards,
Søren

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Daniel Yang
TechNet Community Support

HT201401 my sleep button doesn't work sometimes

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Backup and restore your device. If still having problem, then its a hardware issue.

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Quote
Originally posted by etruscan
This appears to be a partial fix. Now the USB root hubs work (i.e. the expansion bits, so I have a D-Bracket and the front Panel USB working. However, the Back panel still doesn't work, as it appears to be controlled by the "Standard Enhanced PCI to USB Host Controller and the "Standard OpenHCD USB Host Controller," neither of which have power management.
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Okay, with your front panel connectors, do they have a wire for pin 10 on the USB connector? That would be the one next to the blocked out keying pin (pin 9). If so, that could be causing your problem. If you remove the pin from the connector that could clear up the problem. I haven't personally had the issue, but I've seen it talked about. If your internal USB connectors only have 8 wires on them, then I don't know what to tell you...

Sleeping mode doesn't work

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