CMOS Reset (502) error

[Lou-83]

Hi.

When starting up my laptop i get the following message:

The CMOS checksum is invalid.
The CMOS will be reset to the default configuration and will be rebooted.
Please check your BIOS Setup options to see if they changed.
CMOS Reset (502)
ENTER - Reboot the system

Can any suggest how to fix it?

[Riddle_Decipher]

@Lou-83 Let's try these steps to resolve the issue: 

1. Open the Keyboard control panel item, as described in Method 1.
2. Click the Hardware tab, and then click Properties.
3. Click the Change Settings button
   Note This step requires Administrator access
4. Click the Power Management tab, and then verify that the Allow this device to wake the computer is enabled.
5. Click OK, and then click OK again.

BIOS Default: 

1. Turn off the computer and wait five seconds.
2. Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.
3. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.
4. Press F10 to Save and Exit.
5. Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?
6. Follow the prompts to restart your computer.

If the computer restarts normally and the error message does not display, you are done. If the error message displays proceed to the next step.

BIOS Update: Follow steps from the link to update the BIOS: Click here for details

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