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Community Manager

DZ77GA-70K: Firewire (1394) recognition problem

I have a DZ77GA-70K here (latest Bios 0061, default settings) with an Intel 3770K (not overclocked), 16GB (2x8) memory and a Nvidia GeForce GTX 650 Ti running Windows 7 Pro 64Bit SP1 with all updates applied, all drivers are up to date. PSU is 630W. Today I noticed the following:

It happens from time to time that the onboard 1394 controller doesn't show up in the Device Manager although it's enabled in the Bios. Also an addon 1394 card isn't recognized frome time to time. In fact when everything is okay then both controllers show up. Or both don't show up. It may be related to some power saving voodoo because after waking up the machine after some hours usually makes 1394 disappear.

Has anyone here seen something like that? Which setting in the Bios shoud I modify or disable? Or ist the Bios the problem? Or would you suggest that the board should be sent back?

Thanks for all your help in advance!

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3 Replies
Community Manager

Further findings:

The board has onboard firewire and I have also a firewire card (PCI) installed. Both ports work when the PC boots up for the first time. When the PC goes to sleep mode and wakes up BOTH ports are gone in Device Manager! A reset doesn't solve the problem. I have to shut down the PC, unplug the power cable and power it on again. Then everything works again...until the next sleep mode.


Valued Contributor III

Try to install the An IEEE 1394 isochronous device does not function in Windows 7 SP1 or in Windows Server 2008 R2 SP1 hotfix, it includes latest version of OS IEE1394 system driver. The number of IEEE1394-related hotfixes for Windows 7 is just...terrific. Consider a try of Unibrain replacement drivers - Unibrain Software Download Section , at least they make basic work stable.

Community Manager

My problem is not about devices attached to the 1394 ports. It's the ports!