Do you mean the fan runs at full speed on startup then seems to stop working once the system has booted fully?
If so this is quite normal, most GPU fans run at full speed for a moment, then settle down once the system has booted and the drivers are loaded.
Obviously, you uninstalled to existing onboard graphic drivers, disabled the onboard GPU and installed new drivers for the 9800, right?
To check the fan, use the ATI Catalyst Control Centre (CCC) to verify the fan operation. Or Rivatuner, or GPUZ or...
Sounds fine to me, although 70C at idle may be a little high. You might want to check all is well by using ATITOOL`s "scan for artifacts" feature
while GUPZ is also running (google it), to monitor fan speed and GPU temperatures.
Hope the driver issues are now sorted.
Thanks for the help. I used ATItool to scan for artifacts and found none, and I bumped up the fan speed to 65% and it keeps the GPU around 52C.
It is giving me a little problem on boot up. When I first turn it on the GPU fan will run 100% with no video output for about 30 sec and then I get 8 beeps and then nothing. I have to reset the computer a few times to get it to boot, but after that it runs great.
Just checked out a website. According to them, if you have a AMI BIOS eight beeps means a video memory error, but I would n`t take that as totally accurate for your exact configuration.
However, it does suggest that you`ll need to make a few BIOS changes to disable the onboard graphics and set PCI-E as the primary adapter, which I would strongly suggest you do anyway.
If you have no paper manual, there`s usually one on the CD that came with the MB. If not, then you`ll need to get onto the XFX website to download one. And one last point, XFX support needs you to register and I think you`ll need your MB serial number at least for that (it should be on the MB box or you`ll have to take the side off your PC to read it off a sticker on the MB itself).
xfx 9800 gt run fans at 100% in every start-up.. then they go to around 30% by default .... you can change all that on the Nvidia control panel and create a profile so when your computer is indle it would run fans at -+30% and 60celcius (running in SLI mode) and running games i did a profile running all fans at around 90%... very very noisy but keep your system very cool and stable.