I can load any worlds on any versions above 1.9 but as soon as I go back to 1.8.9 or lower everything works fine.

Crash log:
---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 4/3/16 11:37 AM
Description: Updating screen events

java.lang.IllegalStateException: failed to create a child event loop
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
at ma$1.a(SourceFile:61)
at ma$1.b(SourceFile:58)
at oj.c(SourceFile:10)
at ma.a(SourceFile:138)
at bcc.a(SourceFile:2135)
at bhk.e(SourceFile:227)
at bhk.a(SourceFile:182)
at bhk.a(SourceFile:148)
at bdi.b(SourceFile:41)
at bhj.a(SourceFile:118)
at bey.k(SourceFile:404)
at bhj.k(SourceFile:50)
at bey.p(SourceFile:381)
at bcc.t(SourceFile:1575)
at bcc.av(SourceFile:962)
at bcc.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64)
... 20 more
Caused by: java.io.IOException: Unable to establish loopback connection
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.ch.PipeImpl.<init>(Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source)
at java.nio.channels.Pipe.open(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source)
at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source)
at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
... 23 more
Caused by: java.net.SocketException: Invalid argument: connect
at sun.nio.ch.Net.connect0(Native Method)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.Net.connect(Unknown Source)
at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)
at java.nio.channels.SocketChannel.open(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source)
... 32 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Stacktrace:
at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
at ma$1.a(SourceFile:61)
at ma$1.b(SourceFile:58)
at oj.c(SourceFile:10)
at ma.a(SourceFile:138)
at bcc.a(SourceFile:2135)
at bhk.e(SourceFile:227)
at bhk.a(SourceFile:182)
at bhk.a(SourceFile:148)
at bdi.b(SourceFile:41)
at bhj.a(SourceFile:118)
at bey.k(SourceFile:404)
at bhj.k(SourceFile:50)
at bey.p(SourceFile:381)

– Affected screen –
Details:
Screen name: bew
Stacktrace:
at bcc.t(SourceFile:1575)
at bcc.av(SourceFile:962)
at bcc.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.9.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 174645144 bytes (166 MB) / 808976384 bytes (771 MB) up to 3817865216 bytes (3641 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Launched Version: 1.9.2
LWJGL: 2.9.4
OpenGL: GeForce GTX 580/PCIe/SSE2 GL version 4.5.0 NVIDIA 347.52, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 12x Intel(R) Core(TM) i7 CPU X 990 @ 3.47GHz