I have bought this dell vostro 1015 laptop one and half year ago. Day before yesterday my windows xp hanged and I was unable to shut down. So I pressed power on button for few seconds to switch off my laptop. Now my laptop is not starting. I see complete blank screen. I tried booting with CD, but no luck. The LED for power is on. The LED for harddisk keeps blinking. But I can not see anything on screen. Not even Dell logo. Nothing happening. The LED at harddisk keeps blinking. Keyboard do not respond. I tried taking out battery and starting with power adapter. But no luck. Please help.