I bought this same combo ECS K7S5a and Duron 1 Ghz on Wed the 16th. Put the system together on Monday the 21st. Didn't get a video signal, the moniter says everything is connected properly. The heatsink fan did spin up and I can hear the hard drive spin up. Just no video. Return it to Fry's and they check the system out and determine that the Duron is bad. They put in one of their cpu's and the board fires up. OK, try to get another Duron, but their out of stock, so I upgrade to a 1.5gig OEM Athlon. Bring it home and try to start this combo up. I have a Antec KS282 case with a PP303X 300watt power supply. The heat sink fans starts to spin up and then stops. Try this several times and then decide to change the power supply with another one. This time the fan spins up, but I don't hear the hard drive or the other sounds when a computer starts up. Try to start this sytem up again after reseating RAM and video card. This time as the fan spins up the power supply blows. The next day I called Antec and told then of my problems and they upgrade the power supply to a 350watt power supply for free. Return to Frys, and the so called tech says that the M/B and cpu must be bad. Get another M/B and they don't have a 1.5XP so I upgrade to a 1.6XP. I'm thinking at this point maybe my video card is not good so I buy a GeForce Ti. This time the fan start up but again no video signal. Return to Fry's again an a different tech checks out the system and determines that the cpu is bad. Trying to get another 1.6 XP and all they have now are boxed 1.7gig Athlon. Figuring that maybe it was the OEM chips that were bad to begin with (not a good sign when they say this is the last 1.5, 1.6 chip in stock) I go home with the 1.7 Athlon. This time the system starts. ALright finally got together a system that works or so I thought. Loaded up a new install of windows. Load all the drivers, etc,etc. I play with the system for a while and everything appears to be all right. Run Prime 95 and left the system running at night and when I woke up the next day. The computer was DEAD. This time I return everthing back to Fry's, M/B, boxed 1.7cpu, heatsink fan, and Geforce Ti and get my money back. Bought an Epox 8KHA+, 256meg of Cosair memory and a boxed 1.7gig Athlon XP. Get back hame and this system fires right up and haven't had a problem since. I'd beware of buying the ECS K7S5A combo, unless you have a Fry's near by so you can return it.