The warranty of this laptop is over! I had reinstalled the operating system. All problems were gone. Then after a few weeks it came back again! I think it is because of the memory problems, when it reaches a certain level of memory in the hard disk may be!if the back light is completely dead why it turns on again when I boot up the computer? before reinstalling everything I had a problem of start up. The screen went black and it took 20 minutes to come to the desktop. I had researched and found out it was one of the problem in the services that loads up after I log in. I could not find the answer so I re-installed. Now that problem is gone but this is different. I don't it relates to some hardware problem! Is this website related only to the hardware problem as the name suggests?