Unable to detect battery in Dell

Hi Members,

Until last week I had no issues with my system. but since yesterday when I switch on my laptop , I was unable to do so. So I connected my AC adapter and switched it on and it shows that it apparently "CANNOT DETECT THE BATTERY". So, I searched online and found out by updating the BIOS it may get fixed, it DIDN'T .

Can Someone help me with this. The problem is I am out of warranty and I have seen people saying that changing battery may not fix it also.