Hi, everyone.This laptop came to me with a GPU issue whereby the screen became blank after installing Ati drivers. I did a reflow and mistakenly fried KBC [ITE8502E] while clipping on lcd connector(to test) with adapter inserted .I replaced the KBC and the machine powers on but right after the lenovo logo it cuts off. I want some advice on what to look out for. I must add that the last post code I get before it cuts off is phoenix code B0h. Thanks in advance.