Did i fry something?

ok so first time i booted my comp i had the mobo speaker connected wrong. the one tht goes "beep" when u first boot up the comp. anyways i had the positive plugged in the negative and the negative in the positive slot. and i first turned it on i heard a dying beep. and nothing on my monitor. i rebooted the comp twice and heard no beeps. then i found out i had it on other way around. and now i can hear the beep. but its lik 3-4 really fast beep then no more beeps. and still no signal on my monitor. did i fry my mobo? or do you think i have other stuffs plugged in wrong? or maybe some parts r just DOA? i really don't know what to do.

i would also like to add everything seems to be running fine..all the fans and lights r on but just no signal and the crazy beeps. i think its 1 somewhat long and 2 short. but its so fast i can barely hear it. i checked my manual and it said 1 long 2 short = gpu problem. im gonna change the graphics card and see if tht helps. but i have never heard of such crazy beeps i really hope i didnt fry nothing. and if i did i hope it wont fry my new graphics card tht i know works.