HP All in One PC does not power on.

My parent's PC, an HP All in One (Model 22 - dd0153w, Product ID: 7Z6V8AA#ABA), running Windows 11 has stopped powering on.

Yesterday we had a random brownout that flickered the lights for a few seconds. **The PC in question was on a surge protector.**

Today they called me saying the PC will not turn on.

When the power cord is plugged in (on the back of the PC), the light shines white, indicating the it is receiving power.

Pressing the power button does nothing.

I have already done a hard reset on the PC, unplugging it and holding the power button for roughly a minute before trying again to no sucess.

I have done this several times, **both with and without the USB devices plugged in.**

If you hold the Power Button down while the PC is plugged in (roughly 10 seconds) a small white light in the lower right corner on the front (the speaker area) will light up until you release the button. Upon relsease, the light goes out and nothing happens.

I cannot see any damage to the machine nor any faint images (in case the back light was just not working).

I have tried both plugging into a Surge Protector and directly into the wall.

I am running out of ideas for what it could be, the PC has run fine for the past couple of years and isn't used much beyond Facebook and Email.

I cannot get into the PC as I don't have the needed tools at my parent's home.

Just throwing out a hail mary last ditch effort to see if anybody can lend a solution before I just take the machine to a tech shop (I think Geek Squad is the only option around me).