I had to install a fresh copy of windows because it didn't work after I haven been using the HDD on another computer. After installing windows, and the programs I need, I find that sometimes when I move a window, it goes choppy and warpy when moving it around. The same when reading text and scrolling down. And also, for like firefox, it takes like 30 seconds for it to open up. I tried spyware removal, scanning for viruses, checking if any programs are running that waste memory, but nothing, my 800mhz pc100 computer loads things faster than mine, and doesn't lag at all. What could the problem be? Hopefully SP2 will remove the lag... dunno why, but I hope. I was thinking its a video card problem, but I installed all the drivers, and changed the clocks' and stuff, but nothing. Thanks for any help. Um, and in task manager, it says firefox.exe is using 79,168k. Maybe firefox is whats lagging me? But also, when i launch any little thing, my windows begins to lag, and it wasnt so with my 800mhz comp. Also, if i restore down my window, and start moving it around fast, it starts to chop and lag and stuff.... i also get chops in playing games also. dunno what it is