Computer Will Not Shutdown

I just built an HTPC using a Gigabyte GA-EP43-UD3L MB (BIOS F4), 4 GB Corsair memory, WD Green 750GB HD, E8400 CPU and Asus 4650 video card. I have tried this combo in two different computer cases and under Vista 64 and Windows 64. The operating system successfully shutsdowns, but the cpu fan, power fan, system fans and video card fan continue to spin. The only way to get the complete power shutdown is to depress the power button for 4 secconds.

I have not tried flashing the bios to a later version as it seems others have tried this unsuccessfully and I would prefer to try that as last resort. I have searched the web and found others with similar problems or with other looping reboot problems, but found no suggestions that actually fix this. I am hoping that one of you guys may have some suggestions.

It sounds as if you have it set to go into S1 suspend rather than shutting down. Have a look in Power Options and in the BIOS Setup.

WIth Vista and Win7, the default action is NOT to shut down, but to go into suspend mode. With Vista, you don't notice this either.

Links:

http://www.howtogeek.com/howto/windo...-to-shut-down/


The Bill Gates way (probably not your way though):
http://windows.microsoft.com/en-US/w...ut-Down-option

I have already checked the power profile in Win7 as that is the current OS. The power profile is set to shutdown. Sleep does work properly. I am not on the affected computer right now but will check the links against what I have in the profile.

JDC,, I checked the settings per howtogeek and it is set to shutdown. Super, I have tried disabling all of the power on options, alarm options, hpet option, etc. in bios and no luck. I am hping Gigabyte Support can help.

Try clearing the CMOS, and see if that helps. It's clutching at straws a bit, but would be worth a try.

Wanted to post back the fix. I had been using headphones plugged into front audio jack while I built and tested this rig. When I set it up at its final location, I plugged a pair of speakers into the rear audio jack and the computer began shutting down normally. It must have been hanging on the onboard audio or associated driver. I noticed some similar posts about a add-on audio card causing a similar problem.

That is weird. I'm very glad you got it fixed in the end though :)

Computers can sometimes be so frustrating - I must be masochistic. I spoke too soon. It failed to shutdown last night whereas previously I had several succesful shutdowns in a row. :eek:

The only thing that I did different is I played around with Windows Media Center a little bit for the first time, but did not go very far as I have not purchased a tuner card yet - Media Center was kind enough to tell me that.

I feel like Don Quxiote (sp?) tilting at windmills, but I am not going to let this @#%$ computer get the best of me.

Sorry to resurrect this old message, but I wanted to post the final solution in case someone else has the problem. BTW the one time success with the audio was one time only and I only recently found this permanent solution.

The memory was running faster than the FSB speed and the symptom was a failed shutdown. Down speeded the memory and all is well. SiSandra Lite tipped me to this in their warnings at the end of each module display.