This got me puzzled for a while:

Wireless system was working fine for 3 workstations but a recently rebuilt 4th PC couldn’t get a wireless signal.

I moved the PC right next to the WAP, but still no signal.

The owner then remembered he had a paper with the details on the WAP: it also had some wep codes & the IP address of the WAP.

Without the codes & WAP IP address, this would have turned into a long exercise of resetting the wap to factory defaults, then configuring it, then configuring 4 PCs… not what should happen when one PC gets rebuilt…

I verify that the WAP is setup correctly (the paper had the wrong IP address) & struggle with the WEP codes until I realise that I only had to enter 1 of the 4 codes on the list (I’m more familiar with WPA & haven’t used WEP for a while, so this was a good re-learning experience).

I charge my minimum fee & I’m finished in 30 minutes, with another happy customer.