I've had a Droid Razr Maxx for about a year now, never had a problem with it.
It updated a few days ago, and ever since then it hasn't been able to connect to my home wifi. I've turned the modem off and on numerous times, along with my phone. Web accessibility is on.
It does connect to other wifi though. I went to the hospital yesterday and just for the hell of it, tried to connect to the hospitals free wifi. It connected and I was able to check my email and what not.
..Your hospital has WiFi? Do they not know that radio transmissions interfere with medical devices?
Anyway, it could be that your modem is set to the "auto" channel to broadcast it's WiFi signal. Each time you reset it, it will scan for a semi clear channel to use. Your phone may not be able to recognize that it's broadcasting on a different channel, and may be looking for it on the last known channel.
Have you tried resetting network info to factory default in the phones settings, then re-connecting to it?