I have a Dell Dimension 2400 that runs deathly slow. I have reloaded the machine from scratch to make sure that I cleaned out everything. From scratch in my book is start with a Low Level Format then load the OS. This machine has a P4 2.0GHZ 512MB RAM 200GB HD.
First the install process takes about 5 hours. Once XP is up and running it simply takes forever to do anything. When you view task manager it constantly runs at 75 - 100% CPU Usage.
I have tried replacing RAM, Optical Drives w/new cable and HD. The only things I haven't done are replace the MOBO and CPU. Wanted to you the experts opinions first. I know from personal experience that this model is notorious for MOBO failure however I wasn't sure that this is a MOBO issue. Thanks in advance.