Using the following instructions will remove current data and resolve most network/login issues on a Lenovo 300e Gen 2 Chromebook
  1. Make sure you are at the log-in screen - do not log-in
  2. Press these four keys at the same time - Ctrl  Alt  Shift  r - hold for ten seconds, then release
  3. If a check-box appears, on the "Reset this Chrome device" page, asking to "Update firmware for added security," select the check-box.  If the check-box does not appear, move to step 4
  4. Select Powerwash
  5. Select Continue - the device's screen should flash and then cycle through a powerwash
  6. Select Get Started
  7. Select the KPS-Guest network to connect to WIFI. If connection happens automatically, move to step 8
  8. At the Enterprise Enrollment Complete page select Done

After completing step eight, the device should return to the log-in page and is ready for use.