I hope this is a softeware problem but I don't know. I am using a HP pavilion dv9009nt laptop, with windows XP. It is about one year old. Sometimes when I turn it on, ,it seems to boot up but the screen remains totally blank. The hard drive is busy doing something, according to the indicator, but who knows what? Turning it off and then on again has no effect. The only thing that seems to work is to shut it off, disconnect the power cord, remove the battery, wait 30 seconds then replace the battery and try again. This usually works, not always. One time it was doing that and i walked away for about an hour. When I came back to it, it was working perfectly. Does any one have any ideas re this problem. ?? Thanks in advance. JIM