PC HALP!!!11!

ok,last night i ripped my old pc apart to give it a cleaning.everything went good.i re hooked everything.double checked all the connections.everything looked good to go.
go to fire it up,and only the fans fire.no HDD,video card ,ect,ect,just the fans.
ok,i missed something...ripped apart again....triple checked everything...fire it back up,and still the same.only the fans fire.
i`ve ripped this old beast apart many many times.but i have no idea wtf the problem is
it`s a 3-4 year old presario 2.6ghz pent.d

 

your power supply is fuxored?

 

hmm..the fans on power supply are running fine.i`ll rip it out later and see if thats the prob

 

if you have a voltage meter, check the plugs

 

reset cmos and see if it will boot

if not, go to troubleshooting mode, disconnect everything except minimum core components (mobo, cpu, 1 stick or RAM, psu, vid card) and see if the mobo will post.