kpacman

Hi guys. I need help somehow fixing my Laptop. Experienced over throttling then my battery broke. The status of the battery is plugged in but not charging. I tried replacing the thermal paste hoping that'll help, it did somehow by lowering down the temperature but it didn't help my CPU clockspeed. Please help. I'm not that knowledgeable in these kind of stuff.I also have a 4 amber 1 white blink light. I had to plug in my Laptop to turn it on. Also Fan spins waaay too fast when turning on the pc then becomes quiet. Dell Inspiron 7460 PC Specs: 7th Generation Intel® Core™ i5-7200U Processor 12 GB DDR4 NVIDIA® GeForce® 940MX with 2 GB GDDR5 graphics memory Dual Drives with 128GB Solid State Drive + 500GB 5400 rpm Hard Drive