Try measuring the voltage of the RTC coin cell battery on the motherboard and see what is shows.
-
Looking at images of the board it appears to be soldered on so presumably it is a rechargeable battery, but this doesn't meant that it will last forever.
+
Looking at images of the board it appears to be soldered on so presumably it is a rechargeable battery, but this doesn't mean that it will last forever.
What you did to make it work when on battery only, sounds like you reset the BIOS but I think that when you plug in the charger this somehow corrupts it again.
Be sure to disconnect the main battery before testing the RTC battery.
If the RTC battery is faulty (usually they're 3V but this should be marked on the battery itself along with the type number) search online using the type number to find suppliers that suit you best.
=== Update (02/03/24) ===
Hi @markangcos
I don't know.
All I'm suggesting is that the procedure you did to make it work on the battery only is akin to doing a power refresh and usually a power refresh is done to reset a corrupted BIOS back to its factory default condition.
It is the RTC battery that maintains the BIOS settings when the laptop is turned off and once its voltage levels falls below a certain point the BIOS can be come corrupted.
In most older laptops the RTC battery was a non rechargeable Lithium coin cell battery that usually lasted about 5-6 years after which users started to experience different kinds of problems due to the BIOS being corrupted.
Once the battery was replaced it mostly resolved they're issues.
In your case because the RTC battery is soldered to the motherboard (unlike others that simply plugged in or were inserted in a battery holder) it must be a rechargeable type.
The advantage of using this kind is that it would last a lot longer and would never lose its charge as it would be charged every time the charger was connected to the laptop or even from the laptop's main battery.
This is not to say that rechargeable batteries last forever as they also have a lifespan.
I'm simply trying to eliminate it as the cause of your problem. Once you can access it all you have to do is measure its voltage using a DMM (digital multimeter). If it is OK leave it alone if not replace it.
Here are some images that show where it is located and what it looks like.
Here's also a teardown [link|https://www.youtube.com/watch?v=Bu4ZNHIcGDI|video] that may help to access it.
Try measuring the voltage of the RTC coin cell battery on the motherboard and see what is shows.
Looking at images of the board it appears to be soldered on so presumably it is a rechargeable battery, but this doesn't meant that it will last forever.
What you did to make it work when on battery only, sounds like you reset the BIOS but I think that when you plug in the charger this somehow corrupts it again.
Be sure to disconnect the main battery before testing the RTC battery.
If the RTC battery is faulty (usually they're 3V but this should be marked on the battery itself along with the type number) search online using the type number to find suppliers that suit you best.
+
+
=== Update (02/03/24) ===
+
Hi @markangcos
+
+
I don't know.
+
+
All I'm suggesting is that the procedure you did to make it work on the battery only is akin to doing a power refresh and usually a power refresh is done to reset a corrupted BIOS back to its factory default condition.
+
+
It is the RTC battery that maintains the BIOS settings when the laptop is turned off and once its voltage levels falls below a certain point the BIOS can be come corrupted.
+
+
In most older laptops the RTC battery was a non rechargeable Lithium coin cell battery that usually lasted about 5-6 years after which users started to experience different kinds of problems due to the BIOS being corrupted.
+
+
Once the battery was replaced it mostly resolved they're issues.
+
+
In your case because the RTC battery is soldered to the motherboard (unlike others that simply plugged in or were inserted in a battery holder) it must be a rechargeable type.
+
+
The advantage of using this kind is that it would last a lot longer and would never lose its charge as it would be charged every time the charger was connected to the laptop or even from the laptop's main battery.
+
+
This is not to say that rechargeable batteries last forever as they also have a lifespan.
+
+
I'm simply trying to eliminate it as the cause of your problem. Once you can access it all you have to do is measure its voltage using a DMM (digital multimeter). If it is OK leave it alone if not replace it.
+
+
Here are some images that show where it is located and what it looks like.
+
+
Here's also a teardown [link|https://www.youtube.com/watch?v=Bu4ZNHIcGDI|video] that may help to access it.
Hi @markangcos
Try measuring the voltage of the RTC coin cell battery on the motherboard and see what is shows.
Looking at images of the board it appears to be soldered on so presumably it is a rechargeable battery, but this doesn't meant that it will last forever.
What you did to make it work when on battery only, sounds like you reset the BIOS but I think that when you plug in the charger this somehow corrupts it again.
Be sure to disconnect the main battery before testing the RTC battery.
If the RTC battery is faulty (usually they're 3V but this should be marked on the battery itself along with the type number) search online using the type number to find suppliers that suit you best.