CPU fan speed at full?

[DBK47]

hi i'm very new in this furom and this is also my first post so be friendly xD
anyway my problem is on my CPU fan the speed it spin like 4000 Rpm on 30C to 40C temperature is that normal? i already enable the Silent mode 7 months ago but it seems its not working now, this problem just started 3 days from now the first sign was when i bootup my computer its spin like Mad few seconds later it stoped and it spin again and so on it continued that speed, i remember i use some software called "RegistryBooster 2","SpeedUpMyPC" and "SpyEraser" but i guess thats not the reason why my fan starting at full speed? and sometimes the CPU speed changes its own speed like going to slow and going to fast again i always cleaned up my computer using Dust Blower and it didn't help, heres some of screenshot in my CPU status i hope it helps

http://img23.imageshack.us/img23/4156/35284513.jpg

thanks for your time




-=-=-=--=-=-=-=-=-=-=-=-=PROBLEM SOLVE-=-=-=-=-=-=-=--=-=-=

okay after few days doing various methods and softwares though they didn't give me a chance to solve my problem but last 2 weeks i was thinking to reformat my computer though my infected by some type of virus but before that i did this simple method and my problem was solve by going to Start>Run>typing Msconfig>Startup Tab> i disable all start up items but some important are automaticly turn ON like VideoCard startup features finaly annoying noise is gone lol' and thanks for replys by the way thats all...

[curadebt_fees]

CPU fan should run at full speed because it can lower the temperature of the computer. If the speed of cpu fan is slow then your computer can be affected.

[Olle P]

Originally Posted by curadebt_fees

CPU fan should run at full speed because it can lower the temperature of the computer.

The key issue here is that it's not supposed to run at full speed unless the CPU goes hot.

When the CPU fan runs at full speed it's pretty noisy, something not to be desired!
The CPU can easily handle temperatures >60C, so there's no reason to put much effort on cooling when the temp is way below that value.

DBK, I think SpeedUpMyPC might have caused the problem. It's possible that it disabled Silent mode because it uses some tiny fraction of the computer resources when it's active.
Have you made sure it's still (properly installed and) enabled?

Cheers
Olle

[DBK47]

hey i appreciate your replys guys yah probably it was the software fault i well try to reformat my computer later on,well i uninstall those softwares and fix things up and it helps minimize the noise but the speed still running at 3500RPM, and about the screenshot i post did you guys see something normal or anything wrong i'm really not good enough on computer stuff like that


-=-=-=--=-=-=-=-=-=-=-=-=PROBLEM SOLVE-=-=-=-=-=-=-=--=-=-=

okay after few days doing various methods and softwares though they didn't give me a chance to solve my problem but last 2 weeks i was thinking to reformat my computer though my infected by some type of virus but before that i did this simple method and my problem was solve by going to Start>Run>typing Msconfig>Startup Tab> i disable all start up items but some important are automaticly turn ON like VideoCard startup features finaly annoying noise is gone lol' and thanks for replys by the way thats all...