Please help!!

Mge laptop ekt charger ek connect krpu gmn task manager wala cpu usage ek 100% wenawa...bar graph ekapartama L shape ekt rise wenne....itpsse charger ek disconnect klama 80%, 60%, 40%, 20%, 10% ohom adu wenw....me test eka kale background apps mukut run krnnatuw task manager witrk open krla...issrnm e wage welawt CPU usage ek tibbe 3%,4% vge....ada tama me lede issellm dakke...tawa ekak!! Lap ek charge wenwnm led ek orange wenw full unama white wenw....dn charger ek connect klama full wela vge white witri pennanne...et disconnect klama battery ek charge wela na tibba percentage ekmai!!! Mn upgrade krnn kiyl RAM ekkut gatta iye...order klat psse dnne mehem ledak tiyenw kiyl...mehem tiyeddi upgrade kalata kisi wedak wen ekak nane?? 🙁 Mn mokkd mekt krnn one??

My pc specs...

HP Laptop

i5 8250u

Onboard graphics only

4GB RAM

1TB HDD