In the BIOS settings of this computer, it can power on by pressing the space bar. I have not seen any other computer with such a setting. This was just a generic no-name computer. Now she can turn off the computer normally by shutting down in Windows and turn it on by pressing the space bar. Luckily the space bar is big enough and close enough to the edge of the desk so that she can do it by herself. She found this freedom liberating. These little things that most of us take for granted are extremely difficult for individuals with limited motion.
That's very nice of you. There's a few ways to tackle the start-up and shutdown procedure that I've discovered over the years, being in a similar situation myself. Most computer BIOS sections will have a "restore on A/C power loss", that can be set to power on. Then you need some sort of remote switch, I personally use Z-wave, so that's what I'll describe, but you may be able to use others.
Now if I say, Alexa turn on computer, it sends a message to the Z-wave switch, via a bridge, that will flip the switch to on, and then the computer will load.
To turn it off, I use EventGhost, which is a fantastic tool for home automation. If I say, Alexa turn off computer, it sends a message to the Z-wave hub, via a bridge, that will send an HTTP request to the PC, eg.
http://192.168.0.64:8081/?PowerOff. In EventGhost, the PowerOff event is received, and a Windows shutdown command is issued, so the computer shuts down properly, rather than just killing the power.
When the computer has shut down, the Z-wave hub monitoring the Watts used by the computer realises that it is drawing little or no power, and the Z-Wave hub then sends a power off signal to the switch, 'to flip it off at the wall', so to speak. All ready for the cycle to begin again.
Another option is to use Wake-On-LAN and sleep, rather than flipping the switch at the wall. In this instance, the Z-wave hub fires a WOL packet, and to put it to sleep, you use the sleep action in EventGhost, rather than the shutdown action.
To page someone in another room I use 'EchotoEventGhost', so "Alexa, tell my computer to page Nurse Ratchet", gives an event in EventGhost called 'page Nurse Ratchet', which I can then send a message to the Z-wave hub, which in turn sends a message to the mobile phone with an alarm, and text-to-speech message, saying 'Please come help me, nurse! '
Or I can send a message directly from EventGhost to the phone with the same Alexa trigger.
The same method could be used to flash the lights on and off, or for example, a radio plugged in turned on loudly, with a Z-Wave switch that is usually off. EventGhost gets the trigger from Alexa, and turns the radio switch on.
As for TV control, I use a USB-UIRT which can plug into my Z-wave hub, or into a PC. "Alexa turn on changer" goes from Alexa->Bridge->Vera->USB-UIRT->pay-TV box's infrared receiver gets a channel up signal.
If I want a specific channel, I can use Echo to EventGhost, and say, "Alexa, tell computer music channel"
Alexa->Bridge->EventGhost->Vera->USB-UIRT->pay-TV box's infrared receiver gets 3 signals, eg an 8 0 1
I use the same method for air-conditioning. "Alexa, turn on air-conditioning", sends an infrared signal of a predetermined heat/cold fan speed combo. I just use on and off, and vary the signal depending on whether it's winter or summer. I could use EventGhost to pick specific temps just like the music channel example above.
More and more devices are becoming network capable, and both EventGhost and the Vera support pretty much all of them, so you can use the same commands, or triggers and instead of them sending an infrared signal, a network one is sent instead.
Using EventGhost, I can set my receivers input to the correct one automatically when it detects that I'm running Kodi, or when I switch to TV, and set volume levels accordingly, pick the display I want, (whether it's a TV, or computer monitor), power on devices, dim lights, etc.
It's a great tool for disabled people, and you're really only limited by your imagination at what you can have it do, eg.
"Alexa, turn on bedtime" could trigger the following things in EventGhost:
The TV comes on and gets set to HDMI-1, the HTPC gets a WOL packet, the receiver powers on and gets set to HDMI-4 and volume to 45, Kodi runs when the HTPC has resumed, a music playlist starts, the lights go off, a timer starts, and after an hour, everything goes off, and the HTPC goes back to sleep.
Hope that helps someone out there, or gives a few ideas.