Continous Hi-Low Tone no power up

[NOBRA14]

Biostar M7VIP motherboard, Athlon 1800
memory
video card
everything else diconnected
Turn on power fan turns a 1/4 turn and stops,
sometimes fan will continue with hi-low tone like a siren.
Any ideas??

[cody580]

i would say fan full of dirt,if the computor is very old i would replace power supply, or you can probabely get away with replaceing the fan
>cody

after rereading your post i think i would replace PS

[NOBRA14]

Everything is brand new.. At first I had no power so I repaced power supply. Now lights come on, fan comes on for a second. I then either get hi-low tone or nothing at all.
Windows 98

[cody580]

only other i can think of is you have a heat prob with your cpu and it is shutting you down although i never heard one makeing any nois unless your, cpu fan is makeing the noise
cody

[PostCode]

Pull the heatsink off and ensure that you have the protective covering removed from the bottom of the heatsink.

Hope this helps.

[NOBRA14]

Checked bottom of CPU , all clear. After numerous times of off and on, the fan comes on for 2-3 sec. it beeps once as it stops again..