Hello all, I am new to this forum. Please help in solving the problem in my pc. When I am playing multimedia files(let it be audio or video) with players (let it be winmedia player or winamp or any player (with new codecs)also), it stops after playing some time and tells the program performed an illegal operation and needs to be closed. This happens especially when I add new files in the playlist, change the volume level(let it be in the hardware, software(player)). The similar behaviour is observed in the simple applications like msword, pdf reading. This is the same behaviour with any os like windows(98,me,xp), mandriva, redhat, fedora,debian,etc. The system many times restarted/Hangs suddenly. The xp takes much time to boot usually. My system configuration Intel pentium4, 3.0GHz, ram 512MB, Hard disk 80GB,WriteMaster DVD writer Mother Board Mercury P4VM800M7(VIA chipset) with Realtek AC'97 Audio Can anybody tell why this problem happens. What is the remedy?