when i start up my pc i get and error messege saying hardware monitor error found: power supply fan. i press f2 and go to hardwear monitor: MB Temp 35*C/93*F CPU Fan Speed 4017RPM Power Fan Speed 0RPM VCORE Voltage 1.71V +3.3V Voltage 3.31V +5V Voltage 5.16V +12V Voltage 11.67V The CPU Temp and power Fan speed are in RED on the pc. also the pc makes a whistling sound soon after it boots up is it all connected and what do i need to do? Thanks in Advance

Check to see if the psu fan is actually moving-maybe something got stuck, and try blowing some dust out. I would go into the BIOS and check the cpu temperatures-it sounds like the cpu is overheating. You should blow dust off of that fan as well.

How do you know Zara's cpu is overheating, he/she didn't state the temperature. What is your cpu temperature, Zara? As kx suggested, check to make sure the power supply fan is spinning, as well as all other fans in the case (one of these may be causing the whistling). Are you certain the "whistling" isn't coming from your internal pc speaker? My motherboard emits a high frequency pitch sound sometimes (whenever C1 disconnect is enabled), which could be described as whistling to some. BTW, Zara. It helps everyone in this forum if you list your complete system specs with your question (speeds things up).

plyduster: It seemed reasonable to think that the cpu MIGHT be overheating since Zara stated that "The CPU Temp and power Fan speed are in RED on the pc." That's why I suggested checking the cpu temperatures in the BIOS.

Hi there thanks for the feedback just to answer your question the specs for my pc is: Manufacturer: Sony corporation Model: Pcv-rx402(ce) OS: Microsoft Windows XP Home Edition CPU/Ram: 1.795 GHz / 767 MB Video Card: NVIDIA GeForce4 MX 460 (Sony) Sound Card: NVIDIA(R) nForce(TM) Audio and the cpu temp is: 83*C/183*F and is showing in red. will have a go at cleaning the fan out. Thanks for the advice anymore would be appreciated.

The cpu is overheating. If cleaning the fan out doesn't help, you probably should remove the HS/F, clean off the old thermal paste, and reapply new thermal paste.