Hi guys, i have this hp 500 laptop; lcd suddendly stop working. When i power it on, LCD only gets white like if it only got back light. If I plug an external monitor there's image but when switching to the LCD only that white back light. I've seen thatn when I power it on, for maybe 1 second there are some lines like when getting data but after that 1 sencond the get flushed and then the white screen/back light. Is this a VGA-to-LCD output problem from the video card? is the LCD screen defective? or the lcd inverter is not working correctly? THanks in advance por any help. luiguiv.