power led blinking

Hi, Laptop Model: Idea pad L340-15IWL Motherboard Model: FV741/FV540/FG5NO FG540/FG548/FG740 Problem: 1. Power LED solid GLOW after Power up.... 2. No Display 3. Fan is Running Voltages Level: +5VALW --> OK +3VALW --> OK +VCC_GT --> 640mV +CPU_CORE --> 705mV +VCCSA --> 0.8V +1.2V...