It seems when my son is admitted to the hospital, my laptop reveals a new problem.
Now, my HP Pavilion tx1420us is failing to power on after any kind of software shutdown state. This includes: failing to resume from sleep, failing to power on after hibernate, and failing to power on after shutting down from the menu.
Fortunately, I'm able to get around this by shutting it down with the hardware switch. When I power up the computer and notice it's not starting (the audio and wireless lights both remain orange instead of turning blue, there is no disk activity, and the screen remains dark), I can press and hold the power switch in the "off" position for a few seconds until the system shuts off, and then power it back on. Sometimes, though, I have to do this twice.
Also fortunately, I'm using the Windows 7 RC, and Windows 7 includes a feature called "hybrid sleep". The short of this is, when the system goes to sleep, it also writes the hibernation file; so even though I can't wake it up and have to force the power off and wipe out the sleep state in memory, when I power it up it is able to resume from hibernation.
This could indicate that the wireless failure was not directly a fault between the system and the Wi-Fi card, but just a symptom of a general failure.
More so, though, I see this as a failure on my part for trusting HP to produce a laptop that would last beyond its warranty period.