Try this:
Hello everyone... I hope someone can help! I've been using my Dell inspiron 7577 no major problems. But lately I haven't been able to use the SupportAssist from dell. When I try to optimize... any of the options won't respond... It always says it's preparing at 0% and it won't run... Waiting for a long time and it doesn't move from 0%. I have tried Restarting, reinstalling the program, but nothing does the trick. I have also tried a compability mode at Windows 7...        
SA, Inspiron 7577, won't work