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When I tried to overclock the system, some onboard devices failed to work. What could be the cause of the problem?

For example, onboard Realtek ALC650 audio chipset is referenced to CPU host clock frequencies, it is most likely that the audio device will not function normally when you try to overclock beyond its chipset hardware specification operating frequencies.

For example, onboard Realtek ALC650 audio chipset is referenced to CPU host clock frequencies, it is most likely that the audio device will not function normally when you try to overclock beyond its chipset hardware specification operating frequencies. After recheck, if the problem arises due to overclocking please revert back to the original Bios default setting, and increase/fine-tune the CPU FSB and memory timings a little at a time. Enter Windows OS and test for stability and check onboard functions. It is recommended that if you want a stable 'n' quiet system then don't overclock and don't use aggressive Bios and memory setting. Clear CMOS data by hardware jumper is always a good option should you overclock too much and system fails to start up. Once the above issue is eliminated, but if front panel IEEE 1394 firewire, SPDIF in/out, USB, audio devices still fails to work, please check if the internal cables are connected properly. Internal cables linked from the front panel to the onboard headers may become loose or being pull off, if special care is not taken during installation of memory, IDE cables, or PCI devices.
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18.10.2009 05.06.34