My friend had a strangest laptop problem ever. It started he was updating the avast anti virus that whole computer froze and he did not know that it because it is because that avast is updating and I have been using avast no problem. However; it was expired long time ago too. So when he turn back on again. It was blank screen. Then he brought up to me and I turned on couple times did the same thing. What I did is remove the memory in the back of the laptop and put it back again. Then then screen came up and started to work. So then I did scan for viruses, spyware and found a bunch of them. After removing all I believe of the viruses and spyware, when I log in, his laptop screen goes blank. Then I plug to an external monitor and the same thing. Then during the process of format and reinstall windows xp, windows xp installation goes up until creating a list of files to copy and freez up. Then the second time it copied half of the files to the hard drive before it hang up. Then I remove the memory in the laptop and put it back again and it install windows xp without a single problem. Then reformat and reinstall windows without any problem. After a while my laptop screen went blank and caps lock light did not light up. No hard drive light is blinking. So I am sure hard drive is not bad because I did the long dos format and it did not give any errors. So I checked the power management and disable monitor shut off 20 minutes and after about 1 hour or so screen went blank again. That is where I am now. What makes it when I remove the memory and put back in it works for a while? Does anyone know what makes it the laptop screen goes to blank and caps lock or nothing works?