Hi People,
I'm having a wake up from sleep mode problem with my DELL VOSTRO 2521 since some months.
My pc has two graphic cards: Intel 4000 and ATI AMD Radeon.
I've tried many solutions but I do have this problem even today.
When I shut the computer down with the sleep option or when I close the lid, sometimes the pc even refuses to sleep, when it sleeps it won't wake up unless I hard turn off it using the on/off button.
I tried the solutions proposed in the following link and many other ones:
1. Power management tab solutions: Allow this device to wake the computer...
2. Selective startup and services desabling
3. use Powercfg command to check the issue
4. Control panel>Power options>change when computer sleeps>change advanced power settings> Sleep> ... > Multimedia
I see some people talk about the BIOS, to check its settings for sleep, to disable the BIOS setting "USB wake up" . I didn't try it cause i'm not sure about the result.
Also in Device Manager, to go to Keyboards, right click on the Keyboard device, click on properties, Click on the Power Management tab, and click the check box: "allow this device to wake the computer." Uncheck the box that say's "allow the computer to turn off this device to save power.
And to do the same as above for the "Mice and other pointing devices."
But I can't do with my Keyboard, cause there is no Power Management tab on mine.
Please I need your help, cause I really do use sleep mode every day, and this problem makes me so tired so far.
Thanks!