System fan error

When I booted up this morning it gave me a system fan error hit F2 to cancel.
I shut it down and tried several more times before pressing F2 and computer working great. Yes I have taken it apart and cleaned it out and used power cord to check all fans and they are all spinning quietly. I do the daily and weekly maintenance with CCleaner, defrag, AV/Spyware etc.
Stumbled on to Speed Fan but not smart enough to configure it they way the Help menu describes. It showed I have 2 fans spinning at various rpms and temp was 53 Celsius. I have 3 fans but the 3rd showed 0 rpms but I am thinking that Speed Fan download also showed zero for the 3rd fan and author stated he only has 2 fans(maybe his default page)
I am running Vista Home Premium and all drives and updates are current. Any suggestions on why it is booting up that way? Does this 2-3 times per month for the last 4 months.
Thanks for any and all assistance.

 

Most probably the sensor in the fan is not working properly. The fan supplies the RPM figure to the BIOS & then BIOS supplies figure to other utils.

Change the fan if you can or just disable fan error in BIOS.

 

I agree to check the BIOS and perhaps disable the error. If this computer is more than a couple years old, I would replace the battery - which also resets the BIOS - not a big deal, if care is taken during replacement to ensure no static discharge damage.

But I note that some fans, during their initial stages of failure take their sweet time rolling up to speed when first powered up from a "cold" state. I might suggest you keep the side off your computer and watch the fans when booting up a fully cooled-down computer.

You can see which fan this is by careful (and under bright light) examination of the motherboard as the fan header (motherboard connector) will be labeled.

Also, note that Speedfan, or any HW monitor, can only monitor fan speeds of fans that plug into a motherboard that supports fan monitoring of that connection. If your 3rd fan plugs directly into the power supply, it will not be monitored. Speedfan is great, but it frequently mislabels the sensor it is monitoring, causing confusion. I recommend you check any disks that came with your motherboard or computer as many contain hardware monitoring programs to monitor your temperatures and fan speeds.

I assume your temperatures are good.

 

Just an update on fan error....
Went to a site and downloaded a beta trial version and low and behold it showed thermal readings and fan speed. There were several sites to choose from and I tested them both. One site wouldn't read my sensors by Asus so by trial and error I found what I was looking for on the other site.
Thanks for help and have a great day.

 

Is it an Asus motherboard or an Asus motherboard made for Hewlett-Packard as an OEM (Original Equipment Manufacturer)? Your "system" appears to be a HP from your what you put in your System Specs. Asus make motherboards under contract to HP (HP are system manufacturers). From what I can tell, your system is an Hewlett-Packard, not an Asus (if so, it has an OEM motherboard).

Matt

 

My whole HP system and 24" monitor was a refurbished purchased from Costco 2 years ago with Vista Home Premium OEM. So you are probably right when saying Asus motherboard built for HP. Thanks for you insight.

 

System fan error was due to chasis fan not spinning high enough so I had it replaced and now the rpm's on all fans are functioning properly. The fan in question is now spinning 1594 when it was 754 before..Thanks for the heads up.

 

Are you sure you had to replace it? CFM is not determined just by speed. The width, length and pitch of the blade also factor in. If your system was not running hot, then probably all you needed to do was set the threshold to 700 and be good to go. But if you also heard rumblings resonating through the case, or felt vibrations before and now you don't, the definitely, the fan needed to go.

 

Yes I did replace the chasis fan. Before rpm's were 754 now, with new fan rpm's are 1574. Tech heard the rumbling resonating so he did a replacement. Only $25.00 total and now everything is quite and running smooth.

 

Ah, well that's a clear indication of bearings on their way to failure so $25 for fan + labor is not bad. Thanks for the followup.

 

One thing I don't see in the posts is if the fan does not report speed check how many wires are on the fan connector. Two wires are power and ground, a third wire is for fan speed. If your fan only has two wires it will not report speed. This apparently does not apply in this post but anyone reading this to try to solve a similar problem may find it usefull.

 

Of course, any problems would be encountered at first power up if the wires/connectors were the problem.