Bad Processor?

[Boypdp]

So I will start with my setup:

Athlon 64 754 300+
Mobo and Case - http://www.newegg.com/Product/Product.asp?Item=N82E16856110032
1GB Corsair Ram

When I boot the PC with everything plugged in, it seems to start normal for about 2 seconds and then the processor fan shuts off but all the other components keep going. There are no beeps from it so I can not figure out what is wrong. Also no video shows.

I was curious with the setup and noticed the extra +12v power supply connection and decided to disconnect it. Bad idea or not I am not sure. This time everything boots fine except there is again no video, either with an AGP card or the onboard video.

I am assuming that this is the cause of a bad proccessor, anyone else have any ideas?

 

[Boypdp]

darn holiday seasons, ASUS tech support is closed

 

[BigBadBiologist]

Sounds like you don't have your heatsink installed properly and the system is immediately overheating. Try reseating your heatsink. Make sure there is a nice impression of the core in the thermal compound on the bottom of your heatsink.

/edit: why did you disconnect the extra lead?

 

[Boypdp]

the heatsink was down pretty solid, there was a good impression in the compound...ill give it a try again