I cannot download/run minecraft via launcher

I cannot run minecraft via the launcher I tried to delete minecraft and run the launcher but still does not work I keep getting Fatal errors

Here Is my log everytime I try to run the launcher :

Bootstrap (v5)
Current time is Oct 26, 2013 10:52:22 AM
System.getProperty('os.name') == 'Windows 8'
System.getProperty('os.version') == '6.2'
System.getProperty('os.arch') == 'amd64'
System.getProperty('java.version') == '1.7.0_25'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '64'

Looking for update
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma
Got reply in: 1057ms
No update found.
Reversing LZMA on C:\Users\almaa_000\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\almaa_000\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users\almaa_000\AppData\Roaming\.minecraft\launcher.pack to C:\Users\almaa_000\AppData\Roaming\.minecraft\launcher.jar
Cleaning up C:\Users\almaa_000\AppData\Roaming\.minecraft\launcher.pack
Starting launcher.
FATAL ERROR: java.lang.NoClassDefFoundError: com/sun/jmx/mbeanserver/SunJmxMBeanServer
at javax.management.MBeanServerBuilder.newMBeanServerDelegate(Unknown Source)
at javax.management.MBeanServerFactory.newMBeanServer(Unknown Source)
at javax.management.MBeanServerFactory.createMBeanServer(Unknown Source)
at javax.management.MBeanServerFactory.createMBeanServer(Unknown Source)
at java.lang.management.ManagementFactory.getPlatformMBeanServer(Unknown Source)
at org.apache.logging.log4j.core.jmx.Server.registerMBeans(Server.java:107)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.<init>(Log4jContextFactory.java:59)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:85)
at net.minecraft.launcher.Launcher.<clinit>(Launcher.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at net.minecraft.bootstrap.Bootstrap.startLauncher(Bootstrap.java:240)
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:124)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)

Please fix the error and restart.

I could not find the same error anywhere and tried to restart my pc but it still does not work..... It has been a couple days since this error.