Startup sceen message alert prevous fan failure event log say's cpu fan out of range
SOURCE: the fan alert warning when
I am going to assume (and we all know what assume means) - that you have a desktop. With the power disconnected, take the side of your computer off. Take a can of air (you can get them anywhere) and blow out your fans (all of them) dust and dirt can cause the fan to stop working, dirt and dust can even short out your computer. I don't suggest using a vacume cleaner - for the parts (on a vacume cleaner) are so large you can bump a circuit or diode that can break off.
Once you have air cleaned the fans, while the side is still off, power up your computer and see if any of your fans are not working, if one is not - that is what needs to be replaced.
SOURCE: Dell 4700C - Thermal Alert
Check your Processor Fan. It might be too much dirty or loose.
Hope this helps.
SOURCE: Fan Malfunction??
Sounds like a heat issue, pop the side of your case open and turn on the PC, are there fans not moving? Take a close look at your processor fan if there is one.
SOURCE: cpu fan failure message when booting
Be sure to get the correct size if replacing only the fan. I tried finding one myself a couple months ago with no luck at the local electronic stores so replaced the heatsink/fan combination.
Here are some listed at Google Shopping to order online but my local Best Buy, Circuit City and other electronic stores did not have any.
http://www.google.com/products?sourceid=navclient&rlz=1T4GGLR_enUS207US207&q=cpu%20replacement%20fans&um=1&ie=UTF-8&sa=N&tab=wf
SOURCE: CPU Fan Failure on Startup
if you have tried changing the fan then the problem is with the motherboard & motherboard needs to be replaced.
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