启动Xampp时，无法启动Apache和MySQL。为什么？？
18:27:31 [Apache] Problem detected: Apache Not Found!
18:27:31 [Apache] Disabling Apache buttons
18:27:31 [Apache] Run this program from your XAMPP root directory!
18:27:31 [mysql] Problem detected: MySQL Not Found!
18:27:31 [mysql] Disabling MySQL buttons
18:27:31 [mysql] Run this program from your XAMPP root directory!
谁能告诉我如何启动它们？我应该重新安装Xampp吗？
什么是“从XAMPP根目录运行该程序！”？谁能解释我？