Can you open the tray in the normal method?:
Restart your Mac, while holding the mouse button down. The CD tray should open shortly after the monitor screen lights up.
If that fails, try to open the CD tray manually:
The CD front panel will open by making it slide open, pushing down on the door with your fingertips. There's a tiny round hole on the front of the CD drive, immediately under the tray. Firmly push an unfolded paper clip into that hole, and you will see the tray pop out, just enough to gently grab and pull the tray out with your fingers.
The brief, flashing folder probably just means that you need to set the startup disk.
Boot up, then open your System Preferences, then Startup Disk. Select your boot drive by clicking on the drive's icon there, and that should be all you need to do.
But, check on your Bluetooth while you are in the System Preferences.
Do you see a Bluetooth preference pane?
If so, what do you see when you open that pane?
If you don't have Bluetooth pref pane, click on your Apple menu, then choose About this Mac. When that window opens, click on the More Info button. You should see Bluetooth a few lines from the top of the list on the left. What do you see when you click on that Bluetooth item? It should show some information about your bluetooth chip.
If that looks OK (and does NOT say No Information Found), then what problem are you having with Bluetooth?