Sorry I'm Vietnamese so my English is very bad. I have just update my Dell vostro 1310's bios from A10 to A15. But when I was running the software, it went to "not responding" state, so I tried to reboot my laptop by turn off and unplug the power. Now when I rebooted, screen is completely black, NUM-LOCK flashes, and CAPS-LOCK, SCROLL-LOCK and Bluetooth are on. Somebody help me. Thank you a lot for reading my thread. Thank so much !!!