@rms1954 Did you use Keurig Descaling Solution, or white vinegar? I've used both, and while the vinegar worked, it took a whole lot longer to rinse out of the system than the commercial solution did. The first time I tried to descale, I made the mistake of NOT turning the power off first, and the light never went off, I had to go to the Keurig website and re-read the instructions, and that's when I discovered my mistake, so I had to go through the whole procedure again. Anyway, I figured I'd share my experience, just in case it helps. If you turned the power off, pushed the two volume buttons simultaneously, pushed the brew button over and over, dumping each cup of descaler until you got to the add water light, let the brewer sit for half an hour, then dumped the last of the descaler, added fresh water, and brewed until the brewer thought the system was flushed, and the light is still on, then call Keurig on Monday, and hopefully your brewer is still under warranty and they will send you a new one. If you did use white vinegar, you might try running another entire cycle with the commercial descaler, it coulld be your water is hard enough that white vinegar isn't doing the trick. Good luck!