I get the splash screen and an hourglass when I start intel extreme tuning utility (XTU), but I never get beyond that. I've tried reinstalling XTU, installing the management engine, and performing windows update. None have worked.
I have a Surface Pro 4, with a Gen 6 processor. In the past, I have used Intel XTU for underclocking, but something changed in the last year, and it won't get past the splash screen.
Processor: Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz 2.50 GHz
Windows OS Build: 19043.1052
You do realize that your U processor is not supported by XTU, correct? XTU supports only X and K processors. XTU may or may not work on unsupported processors.
Doc (not an Intel employee or contractor)
[Windows 11 is the new Vista]