Different motherboards have differing capabilities for fan monitoring. Most can only monitor the CPU fan and one other system fan. Some add another system fan header, which may be monitored (it might be labeled PWR, suggesting you can use it monitor the speed of the fan in your power supply, if your power supply is capable of this). However, for the fan to be monitored it will need to be using a fan header on the motherboard and the fan will need to be a "three wire" fan that has the ability to monitor its rpm. To see whether your fans are working correctly or not, you'll have to visually inspect them when your system is running. You can't really depend on the motherboard's monitoring capability to inform you of what all your system's fans are doing, especially with as many as 5 of them. If a fan is not running, it may be a simple matter of needing to plug it back in. If it uses a larger molex connector, it can plug directly into your power supply connectors. If it uses a smaller plug, it can either be plugged directly into the motherboard, if you have a free fan header, or you can connect it to a power supply connector with an adapter. (If the fan is a three wire one capable of being monitored, you lose the ability to monitor when plugging it directly into the power supply, but it otherwise will work fine.) The temperatures that you mention sound fine, thought these are probably what are referred to as idle temperatures, taken while you system is sitting at the desktop. I usually like to use a CPU intensive program, like the torture test of Prime95, in order to see how well my cooling is holding up while under load. Many systems have a fair number of fans to keep an eye on. There are usually one or two fans in the power supply, the fan on the CPU's heatsink, at least one, but often more, case fans, and often there is a fan on the heatsink of your video card. It's not unusual for these fans to collect enough dust to fail over time. So, paying attention to what things inside your case look like and doing some periodic cleaning is a good idea. John Sproule ----- Original Message ----- From: "Kathleen" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, December 22, 2005 10:27 PM Subject: [PCBUILD] CPU temps/fans Good evening, I have been working on my computer these past couple of weeks, installing new HDs, etc. During this time, I apparently disconnected or damaged? On of the several fans that my CPU box came with-I believe this was a 'gaming' box, so I think I have 5 fans in all. I am concerned about this though, as I don't want any overheating of the components. I cannot recall what 'safe' temperatures are to be. I have a Soyo Dragonplus 2 MB that has the Smartguardian that monitors the temperature of the chassis and cpu. As well as the fan speeds. Only one fan is working now, according to this so I am worried. Currently the chassis is 95 degrees and the CPU is 117.Can anyone tell me what we should expect for the safe temps? Any help would be appreciated-I am getting mind numb over here and will listen to suggestions. Thank you all for your input. Kathleen LaValley Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://freepctech.com/pcbuild.shtml The NOSPIN Group Promotions is now offering our special coffee mugs and mouse pads with the PCBUILD logo... at a great price!!! http://freepctech.com/goodies/promotions.shtml