title: Win 10 computer does not recognize ESP8266, no blue LED
body: <p>Flashed five ESP8266 ESP-12e by using NodeMCU firmware. Then inserted each into the USB and no blue LED on the board came on. Only flashes momentarily when inserted then turns off. After this the "device manager" said we did have a COM9 port. Now COM9 is not there in the device manager. I have the drivers for CH341SER and CP2102 installed.</p>
  
  <p>Arduino IDE has "port" but grayed out.<br>
  ESPlorer says "could not find any serial port".<br>
  NodeMCU says "Error:Serial port not exist".</p>
  
  <p>Any possible solutions or should I throw the computer into a river?</p>