Hp Laptop Lightning Bolt Flashing

Laptops 2019 - Hp Laptop Lightning Bolt Flashing, Lightning bolt led comes on and stays on but laptop won't, I have a presario cq61-461sa. all was fine until this morning and now when the battery is connected or the power cable is connected, the lightning bolt led comes on and stays on but the laptop will not start.. Laptop wont turn on+white flashing lightening bolt, Hello. my girlfriend's hp pavillion dv4 1000ea laptop has just crashed+wont start up. it is plugged into the mains. when i press the power buttom a white lightening bolt symbol flashes at the .. When i unplug my computer, a hp laptop, i have a blinking, When i unplug my computer, a hp laptop, i have a blinking yellow power light ( lightning bolt). also i can not turn my computer on without the electric supply cord being hooked up. it does not respond at all..