I just resolved the issue of hwinfo64 not displaying. Ha to Right click hwinfo64 in the tray and select maximize, then it displays. Not sure how the selection to minimize occurred.
I have the same problem. Just installed HWInfo64 displayed properly the 1st time. Then a later I tried to launch and it looks like normal launch but nothing is displayed. Original install showed conflict with Corsair H150 CPU Hydro cooler iCUE sw, so I uninstalled iCUE and uninstalled...