The 1394 bus driver that is included with Windows 7 replaces the 1394 bus drivers that were included with earlier versions of Windows. See this site for details.

If your firewire connected devices do not work properly, you can try using other compatible firewire drivers that came with Windows 7 (other than the one selected automatically by Windows as the best driver). Note: this solution may apply to other versions of Windows as well depending on the specific OEM of the firewire controller and the specific firewire device that was being connected.

1- Click the Start Button, type devmgmt.msc in the “Start Search” box and press Enter.

2- Expand the “IEEE 1394 Bus Host Controllers” node in the device tree on the right hand pane

3- Right click the host controller node select “Update driver software …”

4- Select “Browse my computer for driver software”

5- Select “let me pick from a list of device driver on my computer …” and Check the box before “Show compatible hardware”.

6- Choose the second option—1394 OHCI Compliant Host Controller (Legacy), and click next to update the driver.