When I turn on my laptop first there's that Toshiba symbol ‘Toshiba Starting’, then it restarts itself and when it starts again there's this sign saying Automatic Repair. After that there's a black screen. And I've tried presding F5 and Fn together. I'vr tried pressing the Power button for 60 seconds and turning the laptop again. Plus my laptop doesnot have a removeable battery, so can anyone tell me what am I supposed to do