Hi, I recently got a four year old computer which had been overhauled. It has an amd athlong xp 2100+ in it and a new motherboard, plus more ram and a geforce 4 gpu. I checked all the connections and turned on the computer. I saw the bios screen, but then the comp died. I've tried rebooting it and nothing comes up. I went and bought a new motherboard, the KM266PRO V2DP RTL by Jetway. It is compatible with the ahtlon xp 2100+ and up to 2 gigs of ddr333 ram (i have 1 gig) and has an integrated vga along with the agp slot for the geforce. I've inserted the cpu along with all of the other components and have tried booting up again. Once again, I did not get any display, which I guess rules out the possibility of a motherboard error. Next, I took out my athlong 1.3 ghz cpu and replaced teh 2100+. I still get no display. I tried popping out all the ram and nothing happened once again. I also replaced the gpu with a geforce 2 which I know works fine. Once again no result and in addition, the on board gpu doesn't work either. Finally i've decided to unhook the power which runs at 300w and replaced it with a 350w psu. At the same time, nothing else is powered as well. All of the drives are not powered and I still get no display. Could some one please explain to me what's wrong with the computer? In all my years, this is the first time I've had this problem.