Yeah, basically that. I'm back at work in Windows land on a Monday morning, and pondering what sadist at Microsoft included these features. It's not hyperbole to say that the startup repair, and the troubleshooters in settings, have never fixed an issue I've encountered with Windows. Not even once. Is this typical?
ETA: I've learned from reading the responses that the Windows troubleshooters primarily look for missing or broken drivers, and sometimes fix things just by restarting a service, so they're useful if you have troublesome hardware.
Yeah, on Win98 (or maybe Win2k), it would always find this obscure sound card driver for this crappy sound card in this Packard Bell I had. Amazing.
But not once ever for any other issue before or since.
The troubleshooter was legitimately good in Win2k. And has sucked since they unified kernels.