System will not post, no error codes??

[Camma]

I was workin on my computer last night, replacing a couple fans and such.... everything worked just fine beforehand, but after I switched out my fans, the system would not boot at all. It turns on, the fans power up, the hard drive/power leds come on, and the motherboards leds light up too, but.... no post whatsoever, and no error beeps. I tried switchin the fans back out, and that's not the problem either...

Asus P4S333 mobo
P4 1.6A processor w/Alpha 8942+Enermax Adjustable
Visiontek GF3 Ti200
256mb Kingmax PC2700
Seagate Barracuda IV 80gb in a Lian-Li RH600 mobile rack
Pioneer 106s DVD
Yamaha CDRW

I'm rather stumped here... I tried reconnecting all the cables and add-in cards, the ram, and even clearing the CMOS, but so far, i've had no luck at all. I even went so far as to remove the HS/F, reseat the CPU, re-apply my AS3, and re-attach the HS/f, but still nothin. So... since ASUS's tech support on their website seems to have vanished, I'm turning to you guys Any ideas out there?

Camma

 

[cholley]

take out all options to narrow it down, try another power supply

 

[Camma]

ok... well, i got it to boot today, but i'm honestly confused. I flipped the system speaker plug-in on the mobo upside down, and it booted. so... i used it for a bit, went to work, came home, and tried to turn it back on, and... nothing. same old crap. so i'm thinking its either the system speaker jumper on the mobo, or the plug from the case. problem is, i don't have either the extra parts or the money to try mixing and matching