From what I can tell, some NV53's have bluetooth, while some do not. To see if yours has it, go to device manager and see if a bluetooth device is listed. If so, ensure that it is enabled. If it isn't there, you'll probably have to buy a bluetooth dongle.
FYI, I have had an NV53 MS2285 without Bluetooth working perfectly for a couple of years. I bought and installed a BT dongle a couple of weeks ago. After a few days, the computer got the "black screen/power light on/CD opening/no BIOS booting/fan running on and off/Sound, backup, "P" red lights can turn on/no HD activity" problem. I read extensively about it, tried the power disconnect solution, changed power switch assembly: still dead. Looks like the mother board is fried or something like that. A replacement MB for NV53 runs about $150. Thus, my point is, maybe adding a dongle BT will kill your NV53.