Question Laptop won't boot up unless I unplug the CMOS battery and the main running battery ?

[Sralfons]

Hi.

I have an Acer Swift SF315-52, that i simply can't comprehend what is wrong with. If i want it to boot, I have to take out the CMOS battery and the main running battery. I've tried only taking one of them out but it simply won't work, I have to take both of them out for a couple of seconds.

I've also tried replacing the CMOS battery and did a BIOS update. Unfortunately without any luck.

Any suggestions?

 

[helper800]

Hi.

I have an Acer Swift SF315-52, that i simply can't comprehend what is wrong with. If i want it to boot, I have to take out the CMOS battery and the main running battery. I've tried only taking one of them out but it simply won't work, I have to take both of them out for a couple of seconds.

I've also tried replacing the CMOS battery and did a BIOS update. Unfortunately without any luck.

Any suggestions?

Thats certainly odd. Have you tried replacing the battery? How about cleaning the contacts on the ribbon cable from the battery to the motherboard if it is a ribbon cable?

 

[Sralfons]

Thats also what i was

Thats certainly odd. Have you tried replacing the battery? How about cleaning the contacts on the ribbon cable from the battery to the motherboard if it is a ribbon cable?

Thats also what i was thinking. I've never seen a mistake like this. It is not even a ribbon. I haven't tried replacing the battery. Also should it not be able to boot without one? I've tried both options.

 

[helper800]

Thats also what i was

Thats also what i was thinking. I've never seen a mistake like this. It is not even a ribbon. I haven't tried replacing the battery. Also should it not be able to boot without one? I've tried both options.

The laptop should definitely be able to boot without a battery. This leads me to believe that there is some sort of electrical fault relating to the power delivery of the laptop itself. Lets say there is a short between the battery and the some part of the motherboard, well that would explain why it does not work with the battery installed. Same with the CMOS. Likely one of the power planes of the motherboard has a short somewhere such that the current from the battery and the CMOS battery disallows normal function. You said without them installed you were able to get into BIOS? This suggests that the presumptive short in the power plane only exists between the batteries and not the power delivery from the charging port.