DELL LATITUDE E5450
I often use Bluetooth to exchange files.
Recently I got a new laptop and tried to set up Bluetooth. Because I use LAN, I often switch off Wi-Fi, after turning off Wi-Fi, I cannot find Bluetooth anymore; then I realized toggling this switch will affect all the wireless connections including Wi-Fi and Bluetooth (I thought they should be separated…).
I sent couple of files and sent another one later but I cannot connect Bluetooth anymore. I must turn on/off the wireless switch again to reconnect it (what the …).
Finally, I accidentally found out that Bluetooth adapter has a Power Management property, so I just unchecked the save-power property, then everything works fine now.
Step 1. Turn on the wireless switch.
Step 2. Click the Start button and type “Device Manager”
Step 3. Expand Bluetooth Radios→Generic Bluetooth Adapter→Power Management→uncheck “Allow the computer to turn off…”→OK
(It took hours to find the solution…)