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Sleep Mode and Hibernation are not working

abhisekpadhi

I received my laptop from my college. It was an Aspire v7 481p with windows 8 pre-installed. I wanted to install linux and the system didn't allowed because of "Secure Boot" feature in UEFI Bios. So i switched to "Legacy" mode. Now the system didn't booted. I had a Windows 8.1 so i used it to boot my system using an Bootable usb keeping the bios in "legacy" mode.

Installed windows 8.1 successfully. Used the key that I had extracted from windows 8 using 'produkey' software after installing windows 8.1 . And windows 8.1 was activated. The system has 500GB HDD + 23 GB SSD. Now, it almost works fine and the bios is in "Legacy Mode". I still havent installed linux. Right now Backed up all my data to an external HDD.

PROBLEM is:

I have installed some drivers which i downloaded from acer for windows 8.1. The problem is that the system does not behave properly in sleep mode and in hibernation mode. In both the cases the display goes off leaving the system turned on.

Below are the screenshots of list of softwares installed before and after :

Before (With UEFI Bios, windows 8)

Installed Softwares before.png

After, now (present condition)

installed softwares now.png

The system is still in "Legacy" Mode.

Apparently I've not installed some drivers since I thought they might not be important, but I'll be installing all drivers and system softwares in the screenshot of before.

Help me, let me know where I'm wrong. I also want to install linux and UEFI with secure boot doesnot allow.

Also let me know does changing to "legacy" mode has any disadvantages. Speed of the system hasnt been affected much after changing to Legacy mode in bios.

Expecting quicker response.

Thank you.

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Accepted answers

Sharanji

Hi... Smiley Happy

To resolve the Sleep Mode and Hibernation issue, you need to check is you have the correct display drivers in device manager.

Open device manager and expand display adapter, check if your computer has intel or Nvidia, then download and install the drivers for windows 8.1.

You can change the Secure Boot setting and it should recognize the bootable device to install Linux.

Secure Boot is a feature designed to prevent malicious software and unauthorized media from loading during the boot process. This option is enabled by default, but can be turned off in UEFI / BIOS.

You may check if you have performed the below mentioned steps to change the Secure Boot setting.

Completely shut down the computer, Power on the system. As soon as the first logo screen appears, immediately press F2 to enter the BIOS.

Use the right arrow key to select Security. Use the down arrow key to highlight Set Supervisor Password and press Enter.

Create a password and press Enter. Retype the password to confirm and press Enter again.

Use the right arrow key to select Boot. Press the down arrow key to select Secure Boot and press Enter.

With the arrow key, highlight Disabled and press Enter. Press the F10 key and select Yes to save the changes and exit the BIOS.

We suggest removing the supervisor password immediately after enabling Secure Boot. If you choose not to remove your supervisor password, make sure you write it down for future use.

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