As soon as I install the lan drivers on my gx280 it goes off and the cpu fan speeds up to full speed, without these drivers it would work fine all day without internet connection of course.

dells usually go full blast on power up then slow down to normal,sounds like fan is not responding to slow down signal i would try replacing fan, its got to be a dell fan

This is a response I gave to someone else with a similar issue.

May be serious. See if the power light goes amber after power up. I had (have - still siting in my basement - gx280 minitower) one that did same. Power up, fans sound like 747 taking off. Power light goes amber. This is USUALLY caused by bad capacitors on the mother board. Known GX280 problem going back. If you look on the motherboard, the capacitors should have flat tops and not leaking. If the are rounded or leaking, the MB has probably gone bad.

I obviously can not be 100% sure about this as the unit is not here.

You can google this and see the issues. Here is one such link.

http://en.community.dell.com/support-forums/desktop/f/3514/p/19253544/19414291.aspx

dell has web download manual jim

Sounds like a bad motherboard, I try resetting the bios , removing everything but the video , could be a bad power supply too (if you have one jump the wires in there as a test). you can buy those dell MBs cheap on fleabay.
Eric

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

i had same problem today and i tested my machine and solved the problem at last.
the problem is the thermal value that your mainboard sets for your cpu.
please replace the mb.
ps: before this process,i tried almost everything . cpu fan , memory , cpu , cables ,case ... everything. but the problem is on your mb.

Go here and download this program.

http://www.download.com/SpeedFan/3000-2094_4-10067444.html

This program will control your fan speed based on your cpu temp. It's main use is to quiet fan noise.

Same problem... orange power light, fan starts slow and builds up to very high speed.
I removed my video card and SIMMs --> it beeped on boot and the fan did not speed up.
Put one SIMM back in --> booted fine, pressed F2 to view BIOS. Memory reported fine.
Put all SIMMs back in --> all fine now.

The CPU fan on the GX280 is a variable speed fan. It only runs as fast as necessary to keep the CPU cool. But the fan also has an rpm sensor built in that regulates it at 3000 rpm. If the sensor is going bad, it senses its running slower than 3000 rpm when its actually running faster and continues to speed up until its wide open. Thus the 'jet engine' sound. Replace the fan and that should do it. If by chance it doesn't, it gets more serious and likely a motherboard problem.

turn up the task manager to monitor the cpu load. use ctrl shift esc to bring it up. now open up an application. see as the cpu meter goes from low to full green (high).. then check if the fan also speeds up. i guess you have a cmos setup on the motherboard that monitors cpu load and speeds up the fan.

as for the usb -speaker, please explain further..

Hi,

I bought the same motherboard this past year (used) and installed it with AMD Athlon 64 fx-57, Antec P180 case, 550 w power supply. I had the case cover off to check the fans when I first fired it up. The AMD oem cpu fan hesitated at power on for a few seconds, which worried me. It started spinning normally and I then shut the system down and waited a few minutes before restarting it. It spinned up fine so I put the cover back on. I started getting the same error you mentioned, so I updated the BIOS to 1013 version. That didn't solve the problem. I ended up disabling the warning in the BIOS as I got tired of seeing it, as I could see the fans were all spinning and the CPU temperature was at about 26 to 34 on cold boot.

I recently checked on this problem and seems many others with this board have this problem. One fellow said he mailed off a question the the problem to ASUStek and they replied that it is just a glitch, that the fan is "smarter" than the BIOS, as it will hesitate to spin fully at start up if the CPU is cool. The suggestion was to disable "Q Fan Controller" in BIOS. I did and don't get that warning.

As for the yellow question marks under manage in Windows, you need to install the drivers for all of those devices, and they will be on the disk that came with the motherboard. I use the latest drivers from the ASUS site, but the only one I couldn't install was the ACPI ATK 0110 Virtual Device that came out in 2007. When I try to unpack the .rar file it says Corrupt Headers and refuses to use the driver from that file. So, I use the driver from the disk.