急求解答，谢谢

重装系统后安装java启动不了mc

日志显示为
Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at oolloo.jlw.Wrapper.invokeMain(Wrapper.java:71)
        at oolloo.jlw.Wrapper.main(Wrapper.java:51)
Caused by: java.lang.UnsatisfiedLinkError: no lwjgl64 in java.library.path
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1865)
        at java.lang.Runtime.loadLibrary0(Runtime.java:870)
        at java.lang.System.loadLibrary(System.java:1122)
        at org.lwjgl.Sys$1.run(Sys.java:72)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.lwjgl.Sys.doLoadLibrary(Sys.java:66)
        at org.lwjgl.Sys.loadLibrary(Sys.java:87)
        at org.lwjgl.Sys.<clinit>(Sys.java:117)
        at bib.I(SourceFile:2825)
        at net.minecraft.client.main.Main.main(SourceFile:38)
        ... 6 more



好像说是在library里没有lwjgl64
请问怎么解决

重新装一遍mc就行，正常的启动器都会自动补全文件