how long does apple hardware test take 2 run or where is my airport?

[robfilms]

how long does apple hardware test take 2 run?

it seems like for-ever!

i'm testing a 2010 imac i7 2/12gig ram

the airport in the imac "disappeared" months ago.

i have been living off being tethered to a ethernet cable.

i have tried re-setting by:

airport off
applications->library->preferences->system config-preferences.plist
trash preferences.plist
re-boot.

unfortunately, the airport in the imac was not "found".

(i see the airport listed under "about this mac" so i know it is there.)

somehow when i was screwing around with network preferences/set-up, i managed to disable to
he airport and i could never get it back working.

what a hassle.

so i decided to run the apple hardware test (hold down "d" when re-booting) but the darn thing is going on for a really long time.

so, anyone with experience using aht?

thanks in advance.

be well.

rob