I have a Virgin router (no idea what kind it is… rectangular footprint. About 25cM high, \-/ probably file, black, light strip near the top. Supposedly superfast blah blah). It’s worked fine for the past two months I’ve had it. But I just had a brief power cut and since it came back on, said light strip is flashing alternately fast blue and slow white. I’ve tried switching it off for a minute (again) and on again but that’s the extent of my technical expertise. I’d be grateful for any further suggestions before I Get a Man In.