This morning I tried to turn on my laptop without the power cord plugged in, and it didn't work as expected. However, when I plugged in the power cord, it started normally (no error messages). When I got to the desktop, my power icon in the service tray (bottom right hand side) said my battery was charging. Also, the flashing error sequence (four red, one blue) didn't appear, and as of now it's running a solid blue (healthy).After my battery was showing fully charged, I unplugged my power and it seems to be running fine. The problem seems to have gone away by itself (after an overnight rest?).Yesterday, when I was still having the issue, I ran through a couple different diagnostic tests (one through the dell website, and another on startup; I would get an error message pre/at BIOS, and there was an option to run tests there, too). On either test it didn't detect any errors. If I was still having the issue I'd run them again and post the exact results/phrasing, but as of now my laptop seems to be running normally.Thanks, crimsom.
Hello,Today my battery has been disabled (it appears). My power button flashes with 4 red lights followed by a blue. When I look on the user manual, there is no listing for 4 red flashes at all. Anyone happen to know what this error means? Context: If I unplug my power cord, the laptop turns off immediately, and it won't turn on without the power being plugged in. When I plug it in and turn it on, I get the message: "This battery is temporarily disabled, please turn off computer and try again when the unit is back to operational temperature". If I go into the BIOS, the same message is displayed with one small addition of "reseat the AC adapter".I had my computer off for an hour or so, turned it back on and still the same issue, so probably(?) has nothing to do with the temperature. 
m17 R3, four red lights, one blue