I’ve had my Dell G15 laptop for about two years. It has given me an error code of 1 amber light and 4 white lights, something which isn’t covered by the manual. The screen suddenly faded from white to black and now only external monitors work. In advanced display settings, it no longer detects the actual laptop monitor. I’ve done full shutdowns and booted into safe mode with and without external monitors to no avail. I’ve read that for Inspiron laptops it signals battery failure, but the battery was running fine prior to this and it wasn’t due to a collision. It was sitting perfectly still then snapped to fully white, then black. Please help if possible.