Try a full power refresh and check if that resolves the problem
* Turn off the laptop if it is on and disconnect the charger if it is connected.
-
* Open the laptop and remove the main battery from the laptop.
+
* Open the laptop and disconnect and remove the main battery from the laptop.
* Disconnect the RTC coin cell battery from the motherboard
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Here's an image showing the RTC battery, taken from this teardown [https://www.youtube.com/watch?v=4kYMfk5Js2Y|video] for the laptop. Here's the ifixit [guide|100345] guide that may also help.
+
Here's an image showing the RTC battery, taken from this teardown [link|https://www.youtube.com/watch?v=4kYMfk5Js2Y|video] for the laptop. Here's the ifixit [guide|100345] guide that may also help.
When the RTC coin cell battery is removed, measure its voltage. If it is <2.5V DC replace it. The part number information should be on the battery.
[image|2916538]
(click on image)
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect and replace the RTC coin cell battery (or its replacement), reconnect and replace the main battery, reassemble the laptop, connect the charger and check if the laptop turns on OK
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If it turns on OK there may be a message about the date and time being incorrect. This is normal as the BIOS has been reset. Once the date and time have been adjusted, the message won't appear the next time the laptop is turned on. Also if any user definable settings in BIOS have been changed to suit whatever your operating requirement are, they will have to be changed back again.
Hi @lotfilatli
Try a full power refresh and check if that resolves the problem
* Turn off the laptop if it is on and disconnect the charger if it is connected.
* Open the laptop and remove the main battery from the laptop.
* Disconnect the RTC coin cell battery from the motherboard
Here's an image showing the RTC battery, taken from this teardown [https://www.youtube.com/watch?v=4kYMfk5Js2Y|video] for the laptop. Here's the ifixit [guide|100345] guide that may also help.
When the RTC coin cell battery is removed, measure its voltage. If it is <2.5V DC replace it. The part number information should be on the battery.
[image|2916538]
(click on image)
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect and replace the RTC coin cell battery (or its replacement), reconnect and replace the main battery, reassemble the laptop, connect the charger and check if the laptop turns on OK
If it turns on OK there may be a message about the date and time being incorrect. This is normal as the BIOS has been reset. Once the date and time have been adjusted, the message won't appear the next time the laptop is turned on. Also if any user definable settings in BIOS have been changed to suit whatever your operating requirement are, they will have to be changed back again.