I recently acquired this laptop. Format and install continued to fail until I removed the battery. Previous owner pirated the os and inform me that it would not start properly until battery was completely dead. this was the first clue. Since installing XP Pro and getting all drivers in order and complete updates through sp3. I finally tried installing the battery,such as scontobatteria.com/asus-k53sv.html . Every time I do the touch pad fails the os start up is slow and other drivers fail one by one. My guess is either the battery is bad or some driver or program for it is bad. My problem is I don't know how to troubleshoot this issue. Device manager does not indicate any bad drivers. Can anyone tell me what I can look for or do?