I am building a PC, Using a MSI KT4V Mainboard and Athlon XP2400 processor. I have assembled all parts and turned on but I get nothing, only the cpu fan working, 1 beep on turn on. I have taken everything off, so all that is assembled on the Maonboard is the CPU and heatsink fan. Power is obviously going to the board as the CPU fan is working. The mainboard is completely off the case, so no shorting out on the case. Does this sound like a fualty mainboard, is there anyway of testing the mainboard?? or could it be the CPU?? or have I missed something so blindingly obvious.
take out your gfx card, and boot. hear post beep? if so then buy a new gfx card or get that one refunded. or check that all fans are plugged into correct places, i.e. processor fan in the cpu fan pin socket etc.
If you dont hear post beep without gfx card, then reinsert it and take out the ram and boot up and do that same. for any component. But really it would mainly be the ram or the gfx card, as i had exactly same problem 2months ago and it was the gfx card. I used same mobo too. Secondly might be the ram. if all else fails, it might be your processor. But the checks i give you are basic and easy ones to perform, so best of luck.
With the components you suggested in or out the boot up is the same, 1 beep after pressing the on button, the CPU fan kicks in, then a click click and that is it. The only thing I have not tried yet is to take off the heatsink fan remove processor and refit them.
disconnect power from cd drives if any just in case. Take out ram and gfx card together and have you checked the fan? then finally boot up. Does the beep you get come straight away or after a bit as this might be a post beep. My pc beeps straight away once to signal the button has been pressed then again to say the post is okay. What are the whole specs of your system?
All three of you are suggesting the Graphics card as probably the problem here. I will take the card from this machine and will post back with results. Just as a point of interest and maybe comments on reliability, the Graphics card is a Radeon 9200 Excalibur 128MB DDR. Never used it before, don't normally go this high spec as not a gamer.