boot issues

I have just finished building a new computer (with a few older parts)
- Gigabyte ga-7vrxp, athlon 2100+ w/ thermltake volcano 9, 256mb 2700 corsair ddr w/ platinum heatsink, geforce 3 etc....

It worked perfectly until i messed up. My finger scraped by the fan while it was booting up and broke the actually fan. I immediatly turned the computer off. NO pieces hit anything on the computer so i replaced the fan with the one supplied with the chip. When i turned the computer on, the speaker seems to suddely pop twice, the fans spin, but no video and no boot. Then after about five second the entire system shuts down. i am fairly versed in computers and have tried nearly everything (cmos, barebone check) I can't imagine the cpu was damaged but when i run the system w/o it, the power stays on. What is going on?