Good Morning,
Would like to check the following
1. What model is it
2. Is it a built in battery or user removable battery
if yes to removable battery for Q2, remove it and see if laptop works and the amber light stops blinking - if yes, it could mean that the battery is faulty.
What you can do is
a. let the battery discharge by using it, then try charging it again.
b. right click uninstall battery in device manager as shown
then scan for hardware changes to see if this fixes your problem
c. Get it checked out at the service ctr / a trusted computer outlet like PCDreams