HP Envy 750-114 won’t boot with new CMOS battery installed

[Ross43]

I was given this computer as a gift. When testing it everything operated normally until I tried to shut it down. It would shutdown for 5 seconds and then immediately boot back up. I thought the culprit was a dead cmos battery, but when I replace it the machine does not boot at all. The light behind the PSU is lit green as well. So when I remove the cmos battery, the machine boots up, but I can’t shut it down as it starts back up. Could it possibly be a bad motherboard?

[Ross43]

I don’t see any burn marks on the board. I’ve unplugged all the connectors except for the 24 pin and cpu 4 pin and it still happens. I’ve noticed that when I plug it into an outlet it makes a little spark. Once I take out the battery it doesn’t do that and it starts to boot. But then the issue becomes “why won’t the pc shutdown” I guess I will just have to unplug it every time I shutdown. So I’m thinking the motherboard is shorted? 

[Echo_Lake]

@Ross43

Thank you for posting on HP Support Community.

Don't worry as I'll be glad to help,

I understand that your HP notebook is not working correctly. If you have already performed the steps from the document HP PCs - Computer does not start: https://support.hp.com/in-en/document/c01997899 and the issue persists, it could be a hardware failure. 

Please reach out to HP Support in your region regarding the service options for your computer. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/             
 

Hope this helps!              
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