ECO4 Viewing images on network failure

During a thunderstorm last > week our equipment failed briefly but then came back on and
> everything is working perfectly, except I can no longer view
> the camera images on my laptop via Internet Explorer or using
> the Network Viewer programme. The ECO4 is functioning quite
> normally in every other respect and we can view all four
> cameras on the monitor. We did try connecting a new cable
> from the ECO4 to the broadband wireless router, and have
> checked the network settings which all seem unchanged. I
> would greatly appreciate any thoughts on what I can try next. I have tried rebooting the ECO4 and the router.
> Many thanks. Karin