hi,

thank you for your replies about the " cpu fan fails or speed too low" message

even tough ...i opened my pc and verified that the air flow was working fine...

when i accessed the bios , i couldn't find any info about the cpu fan tempure or any cpu temperature related topics....

i have an ASUS A8N SLI ...
i appreciate if anybody could tell me how to get to the cpu fan temparute from opening the bios

thanks

Specific motherboard manuals usually have a section devoted to all the options possible in BIOS setup, sometimes with screenshots.

If you don't have a manual, you can probably find one on-line from the manufacturer.

I don't know exactly which mobo you have, but here's where you would start to find yours:
http://www.asus.com

Then, depending on language, that can then take you to:
http://support.asus.com/download/download.aspx?SLanguage=en-us

Using that page for example, I searched for one specific A8N SLI version manual and it displayed this URL:
http://dlsvr03.asus.com/pub/ASUS/mb/socket939/A8N-SLI/e1947_a8n-sli.pdf