I have a IBM 2153 en2 that I have updated the harddrive to 80 gb and 512 of memory and Windows XP. But the computer is still slow and it will not play videos. The processor is 100htz. I was wondering, could the processor be my problem and should I upgrade it? I do know that I have old BIOS settings but I don't think this is my problem. I just need the computer to run faster and play videos. Any suggestions?