Laptop stoped after after new battery replacment.

I replaced my laptop with a new original battery and it didn't boot first time without charging then I charged it til 93% and it ran for 4-5 hours long after which it was at 32%, that when I decided to charge it again.

As I put in the charger, the light on the charger started blinking and the laptop immediately turned off, the charger blinked for 2-3 sec, then it stopped blinking.

The charger light would go out when I will plug it in the laptop and will come back on as soon as I plug out the charger.

Now the laptop would not turn on with the battery but withour charger or with only the charger.

I took out the battery as soon this happned and tried to hold the power for 30 sec to try again but still it would not turn on.

Should I return the battery as it has still a return window left because I do not know what is broken at this point?

For context, I brought a new battery beacuse my old one lost all capacity after 8 year of use ( it will not keep the laptop on for even a second) , I was running my laptop on just the power adapeter for a month.

Also my laptop was showing daignostics a few day ago that my charger was not outputing correct voltage a number of times.