I bought a Dell laptop with ubuntu (version 18) installed. After 10-15 days of use, it began to show a startup problem. It can only be started if the charger cable is connected.
I raised this problem, the Dell executive investigated and decided that the problem is due to a damaged operating system. He asked me to change the operating system to Windows or reinstall Ubuntu. If I reinstall Ubuntu again, the problem may be repeated.
Is changing the operating system the only solution? Can I know any feasible solution if it has one and what is the main cause?