Acer 5742G and standby issue on winodws 7

most of time,when my Acer laptop (aspire 5742G) goes to standby mode on Windows 7 Ultimate, it can not wake again. When i press any key to wake it up, it wont work and i have to press power button to turn it on again.
all drivers are installed properly.
what do you think how to fix this problem?

This is the standard way to start from 'hibernation/sleep' mode. That's how it is...  there is no problem to fix.

[Moderator]

Obviously the above post does not relate to your question.  Did it ever work correctly or has it always been this way.

Obviously the above post does not relate to your question.  Did it ever work correctly or has it always been this way.

My bad I mis-read and jumped ahead of myself.

i have the base model and there should be a Fn and f# combo to wake it

in short time period(less 5 min), standby mode works properly.
i even disabled all network adapters but problem is still available.
when i press any key to wake the laptop up, the light on power button be turned on but immediately it will shut down and every thing be turned off.
i will have to press power button to turn on the laptop.
i just know when it goes to standby mode, it tries to comeback but it becomes shut down completely because of a problem.

i need help
please guide me

Fn + F4 puts it to Sleep
Press & release Power button wakes it up.

my problem is that when i press power button(or any key) for waking it up.it wont wake up
and it will be shut down and get off.
when it gets off i have to press power button to turn on laptop.
my problem is not its shortcuts
my problem is that standby mode does not work
when it goes standby mode, in fact it will be shut down.
i never talked about how to go standby mode

...i never talked about how to go standby mode

Is that so?

most of time,when my Acer laptop (aspire 5742G) goes to standby mode on Windows 7 Ultimate, it can not wake again. When i press any key to wake it up, it wont work and i have to press power button to turn it on again.
all drivers are installed properly.
what do you think how to fix this problem?

most of time,when my Acer laptop (aspire 5742G) goes to standby mode on Windows 7 Ultimate, it can not wake again. When i press any key to wake it up, it wont work and i have to press power button to turn it on again.
all drivers are installed properly.
what do you think how to fix this problem?

maybe it is for my bad English that i couldn't say my mean well. my problem is that it cannot wake up again, when it goes to standby mode.
i apologize for my bad English.

Maybe some help here:  http://windows.microsoft.com/en-US/windows-vista/Turn-off-a-computer-frequently-asked-questions

   Can I change what happens when I click the Power button on my computer?

By default, Windows puts your computer to sleep when you click the Power button. However, you can change the default setting so that clicking the button causes your computer to sleep, hibernate, or shut down. (Any changes you make will also apply to the physical power button on the computer itself.) To change the default setting:

    Open Power Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Power Options.

    On the Select a power plan page, click Change plan settings under the selected plan.

    On the Change settings for the plan page, click Change advanced power settings.

    On the Advanced settings tab, expand Power buttons and lid, expand Start menu power button, and then do one of the following:

        If you are using a mobile PC, click On battery or Plugged in (or both), click the arrow, and then click Sleep, Hibernate, or Shut Down.

        If you are using a desktop computer, click Setting, click the arrow, and then click Sleep, Hibernate, or Shut Down.

    Click OK, and then click Save changes.

...i have to press power button to turn it on again...

This is normal & designed to work that way.  My HP laptop does it this way.

my mean is that when i press the power button to wake it up, it wont wake up.
you are right in normal way when we press power button, the laptop wakes up properly.
but my laptop wont wakes up, when i press power button or any key.
i have to press power button again to turn on laptop not to wake up the laptop
it mean that the laptop boot windows again, start windows again.
in my laptop standby is equal shut down.

[Moderator]

All Windows power saving features are garbage...always have been...

Mine seems to be working well.  But it's only been less than 24hrs.  CPUID Hardware Monitor is monitoring battery capacity.  Put it to sleep a few times already.  Power button flashes when asleep.

[Moderator]

Sleep and Hibernation were never really fully perfected by MS. While they work fine on most systems, either or both simply don't work properly and / or can cause major issues on others. My recommendation for desktop users (and laptop users for short term power saving) is to set the display and hd to power down after a defined period of inactivity. It works perfectly for pretty much everyone and uses zero resources.

Unbelievable. How is this problem so hard to understand. Klenshin has explained it in detail about 3 times and still no-one is answering the question, but instead answering with completely useless and trivial information. I too have this problem so let me explain it as clear as I can.

1. The computer is put to sleep by some method (fn-f4, closing the lid, clicking start->suspend; it doesn't matter)
2. If the laptop is not resumed within around 5 minutes, then in most cases when the power button is pressed instead of restoring the previous session it will power up for about 1-2 seconds and then instantly shutdown.
3. When the power button is pressed again, the computer will completely boot up the operating system again, losing everything from the previous session.

Notes:

• This happens about 90% of the time but on the odd occasion it will resume the session
• If the computer is plugged in and the power button is pressed this problem does not occur, even if it was put into standby when using battery

I too have an Acer Aspire 5742G which I purchased in December last year. Straight out of the box I installed Ubuntu Linux and whipped anything to do with Windows. Straight away this problem occurred and I could find no solution. About a month a go I installed Windows 7 Home Premium thinking that the cause of the problem was something to do with Linux, but still the problem persists. This means that the problem is not a problem with Windows and its power options.I have updated the BIOS and checked through the BIOS there is no option relating to resuming the operating system

I think I have explained myself well. Klenshin  correct me if this is not your problem. And if anyone is able to solve this problem I will be utterly thankful as it is the most annoying thing ever.

Unbelievable. How is this problem so hard to understand. Klenshin has explained it in detail about 3 times and still no-one is answering the question, but instead answering with completely useless and trivial information.

As a new member, I advise you to moderate your tone. In fact, even if you had 10 squillion posts and 5 zillion thanks, the rudeness of your post would be unacceptable. Do you really think anybody reading your post, which, in essence says "You bunch of bozos, hurry up and fix my problem!", is going to be motivated to do so?

Allan is pointing in the right direction, but I suspect the problem is not at the OS level. I suspect the ACPI Implementation on the laptop is broken. You need Acer to fix it with a BIOS update. Many systems have problems with S3 suspend and resume*. This is usually caused by buggy ACPI DSDT implemented by OEMs. Unfortunately not all OEMs are dedicated enough to fix it.

* Google will help you find out about this.