Just quick run down. Would like to replace everything but chassis, DVD/rw(6 months old), cooling systems, and power supply. Not sure about the sound card it's old. This system was built in 2003 or 2004. The hdd must go it's only 50 gb. As for a monitor I use my 42 inch RCA tv and sound through a surround sound. I'll get and post the numbers off stuff like the motherboard, soundcard and such today. If it will help I can try to post some picks of the chassis inside and out, or is there something more you need to determine if or what motherboard will fit.