HRT is white walling after downloading.

Does anyone have a idea what is up with this tool? I need it to hopefully repair issue with my client and website. I told techs that everything is super slow except game play itself. Everything out side of game play is just slow. Loading screens getting in and out of games etc. Now I have downloaded the Hex Tech Repair Tool 5 times and still same results. I open it to install it pops open with a big white wall screen/window almost like it isn't there. I am assuming this is corrupted windows issue so I will reinstall windows.