It used to fix WiFi issues for me back on Windows Vista (bleh). Vista would always have issues when I woke my laptop from sleep mode, and my WiFi would be disconnected and unable to reconnect/properly turn off. Running the troubleshooter would restart my wireless card. Other than that I haven't encountered anything it's helped, but I don't use windows too often these days.

The search service on my computer crashes from time to time and the troubleshooter gets it working again without having to reboot (I hate rebooting).

Even once? Yeah, just that once though. It was on like a dell latitude from 2010 and it wasn't a permanent solution either

I think it fixed my MBR once during Win7 days.

If the problem can be solved by a restart of that thing's service (audio, network, etc.) then it has fixed things for me in the past.

Pretty much no other solution (especially the running old games one) has ever worked in the troubleshooter without me having to tinker with it further.

Just been through the fire of having to clone my system to a new SSD and no, startup repair did nothing for me.

Yes, I've used it to fix multiple issues from boot issues to driver issues.

I think it helped with a internet issue once, but I probably just needed to reset something.

I'm pretty sure it just does the absolute basic troubleshooting.

had a couple of windows 2000 pro and server recovery saves. haven't thought about it since. hrmmm

The HP help and troubleshooting software did better than the Microsoft one.

Troubleshooter was always able to fix my network issues. (Basically just resetting it)

Not once as far as the Troubleshooting Wizards go.