Bluetooth won't turn on
Can't turn Bluetooth on on my MacBook Pro. Have had the computer forbears & have always used iPhone thru bluetooth to connect to net away from home.
Some time ago this stopped working. I have followed the instruction is other posts by
1) deleted the com.apple.bluetooth.plist & other associated one. Restarted. No change.
2) Turned computer off. Ctrl+option+shift+power. Held, released. Restarted. No change.
Have spent hours on this. Really need it going. Please help
MacBook Pro, Mac OS X (10.7.5)