diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/Commands.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/Commands.java
index 68b911a..8060bb7 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/Commands.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/Commands.java
@@ -113,13 +113,7 @@ public class Commands implements CommandExecutor {
 								+ " [\"\",{\"text\":\" [Ctrl]\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/computer key ControlLeft\"}},{\"text\":\" [Alt]\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/computer key AltLeft\"}},{\"text\":\" [Space]\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/computer key Space\"}},{\"text\":\" [AltGr]\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/computer key AltRight\"}},{\"text\":\" [Ctrl]\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/computer key ControlRight\"}}]");
 						break;
 					case "mouse":
-						if (!MouseLockerPlayerListener.LockedPlayers.containsKey(sender)) {
-							MouseLockerPlayerListener.LockedPlayers.put((Player) sender, ((Player) sender).getLocation());
-							sender.sendMessage("§aMouse locked.");
-						} else {
-							MouseLockerPlayerListener.LockedPlayers.remove(sender);
-							sender.sendMessage("§bMouse unlocked.");
-						}
+						MouseLockerPlayerListener.toggleLock((Player) sender);
 						break;
 					case "mspeed":
 					case "mousespeed":
diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/Computer.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/Computer.java
index 70885c4..a096283 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/Computer.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/Computer.java
@@ -31,7 +31,7 @@ public final class Computer {
         this.plugin = plugin;
 	    this.session = session;
 	    this.vbox = vbox;
-        if(instance!=null) throw new IllegalStateException("A computer already exists!");
+	    if (instance != null) throw new IllegalStateException("A computer already exists!");
 	    instance = this;
     }
 
@@ -76,19 +76,18 @@ public final class Computer {
     public void onLock(CommandSender sender) {
         machine = session.getMachine(); // This is the Machine object we can work with
         final IConsole console = session.getConsole();
-        handler = new MachineEventHandler(Computer.this);
+	    handler = new MachineEventHandler(Computer.this, sender);
         listener = handler.registerTo(console.getEventSource());
         IProgress progress = console.powerUp(); // https://marc.info/?l=vbox-dev&m=142780789819967&w=2
 	    handler.registerTo(progress.getEventSource()); //TODO: Show progress bar some way?
         console.getDisplay().attachFramebuffer(0L,
                 new IFramebuffer(new MCFrameBuffer(console.getDisplay(), true)));
-        sendMessage(sender, "§eComputer started.");
     }
 
     private void sendMessage(@Nullable CommandSender sender, String message) {
-        if(sender!=null)
-        sender.sendMessage(message);
-        plugin.getLogger().warning((sender==null?"":sender.getName() + ": ") + ChatColor.stripColor(message));
+	    if (sender != null)
+		    sender.sendMessage(message);
+	    plugin.getLogger().warning((sender == null ? "" : sender.getName() + ": ") + ChatColor.stripColor(message));
     }
 
     public void Stop(CommandSender sender) {
@@ -192,20 +191,20 @@ public final class Computer {
         UpdateMouse(sender, x, y, z, w, mbs, false);
     }
 
-	public void onMachineStop() {
-        System.out.println("Unlocking machine...");
+	public void onMachineStart(CommandSender sender) {
+		sendMessage(sender, "§eComputer started.");
+	}
+
+	public void onMachineStop(CommandSender sender) {
         Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
             if (session.getState() == SessionState.Locked) {
-                System.out.println("Unlocking...");
                 session.unlockMachine(); //Needs to be outside of the event handler
-                System.out.println("Machine unlocked.");
             }
         });
-        System.out.println("Setting pixels...");
         GPURendererInternal.setPixels(new byte[1], 0, 0); //Black screen
-        System.out.println("Stopping events...");
         stopEvents();
-        plugin.getLogger().info("Computer powered off.");
+		MouseLockerPlayerListener.computerStop();
+		sendMessage(sender, "§eComputer powered off.");
     }
 
     public void stopEvents() {
diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/MouseLockerPlayerListener.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/MouseLockerPlayerListener.java
index 07785fd..9918815 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/MouseLockerPlayerListener.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/MouseLockerPlayerListener.java
@@ -2,14 +2,17 @@ package sznp.virtualcomputer;
 
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.event.player.PlayerTeleportEvent.TeleportCause;
 
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Map.Entry;
 
-public class MouseLockerPlayerListener implements Runnable {
-	public static Map<Player, Location> LockedPlayers = new HashMap<>();
+public class MouseLockerPlayerListener implements Runnable, Listener {
+	private static final Map<Player, Location> LockedPlayers = new HashMap<>();
 	public static float LockedSpeed = 5;
 
 	@Override
@@ -28,4 +31,23 @@ public class MouseLockerPlayerListener implements Runnable {
 			entry.getKey().teleport(entry.getValue(), TeleportCause.PLUGIN);
 		}
 	}
+
+	@EventHandler
+	public void onPlayerLeave(PlayerQuitEvent event) {
+		LockedPlayers.remove(event.getPlayer());
+	}
+
+	public static void toggleLock(Player player) {
+		if (!MouseLockerPlayerListener.LockedPlayers.containsKey(player)) {
+			MouseLockerPlayerListener.LockedPlayers.put(player, player.getLocation());
+			player.sendMessage("§aMouse locked.");
+		} else {
+			MouseLockerPlayerListener.LockedPlayers.remove(player);
+			player.sendMessage("§bMouse unlocked.");
+		}
+	}
+
+	public static void computerStop() {
+		LockedPlayers.clear();
+	}
 }
diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/PluginMain.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/PluginMain.java
index b4ec080..0e5538f 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/PluginMain.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/PluginMain.java
@@ -1,6 +1,7 @@
 package sznp.virtualcomputer;
 
 import jnr.ffi.LibraryLoader;
+import lombok.val;
 import org.bukkit.Bukkit;
 import org.bukkit.command.ConsoleCommandSender;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -92,7 +93,9 @@ public class PluginMain extends JavaPlugin {
 				ccs.sendMessage("§6Compatibility error, using slower renderer");
 			}
 			ccs.sendMessage("§bLoaded!");
-			mousetask = getServer().getScheduler().runTaskTimer(this, new MouseLockerPlayerListener(), 0, 0);
+			val mlpl = new MouseLockerPlayerListener();
+			mousetask = getServer().getScheduler().runTaskTimer(this, mlpl, 0, 0);
+			getServer().getPluginManager().registerEvents(mlpl, this);
 
 		} catch (final Exception e) {
 			e.printStackTrace();
diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/events/MachineEventHandler.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/events/MachineEventHandler.java
index cf42dd5..f4c2173 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/events/MachineEventHandler.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/events/MachineEventHandler.java
@@ -1,6 +1,7 @@
 package sznp.virtualcomputer.events;
 
 import com.google.common.collect.ImmutableMap;
+import org.bukkit.command.CommandSender;
 import org.bukkit.event.EventHandler;
 import org.virtualbox_6_0.IProgressTaskCompletedEvent;
 import org.virtualbox_6_0.IStateChangedEvent;
@@ -9,17 +10,18 @@ import sznp.virtualcomputer.Computer;
 
 public class MachineEventHandler extends EventHandlerBase {
     private final Computer computer;
+	private final CommandSender sender;
 	private boolean starting = false;
 
-	public MachineEventHandler(Computer computer) {
+	public MachineEventHandler(Computer computer, CommandSender sender) {
 		super(ImmutableMap.of(VBoxEventType.OnStateChanged, IStateChangedEvent.class,
 				VBoxEventType.OnProgressTaskCompleted, IProgressTaskCompletedEvent.class));
 		this.computer = computer;
+		this.sender = sender;
 	}
 
 	@EventHandler
 	public void handleStateChange(IStateChangedEvent event) { //https://www.virtualbox.org/sdkref/_virtual_box_8idl.html#a80b08f71210afe16038e904a656ed9eb
-		System.out.println("State event: " + event.getState());
 		switch (event.getState()) {
 			case Stuck:
 				computer.Stop(null);
@@ -27,17 +29,18 @@ public class MachineEventHandler extends EventHandlerBase {
 			case PoweredOff:
 			case Saved:
 				if (starting) {
-					System.out.println("Failed to start computer! See the VM's log for more details.");
-					starting = false; //TODO: Sender
+					sender.sendMessage("§cFailed to start computer! See the VM's log for more details.");
+					sender.sendMessage("§cMake sure that 2D and 3D acceleration is disabled.");
+					starting = false;
 				}
-				computer.onMachineStop();
+				computer.onMachineStop(sender);
 				break;
 			case Starting:
 				starting = true;
 				break;
 			case Running:
-				System.out.println("Computer is running.");
 				starting = false;
+				computer.onMachineStart(sender);
 				break;
 		}
     }
diff --git a/VirtualComputer/src/main/java/sznp/virtualcomputer/renderer/MCFrameBuffer.java b/VirtualComputer/src/main/java/sznp/virtualcomputer/renderer/MCFrameBuffer.java
index 8d10fe3..c8a5d6b 100644
--- a/VirtualComputer/src/main/java/sznp/virtualcomputer/renderer/MCFrameBuffer.java
+++ b/VirtualComputer/src/main/java/sznp/virtualcomputer/renderer/MCFrameBuffer.java
@@ -39,6 +39,7 @@ public class MCFrameBuffer implements IFramebuffer {
 	@Override
 	public long[] getCapabilities(long[] arg0) {
 		try {
+			System.out.println("Capabilities queried");
 			System.out.println("Capabilities: " + Arrays.toString(arg0));
 			return new long[]{FramebufferCapabilities.UpdateImage.value()};
 		}
@@ -94,24 +95,14 @@ public class MCFrameBuffer implements IFramebuffer {
 
 	@Override
 	public void notifyChange(long screenId, long xOrigin, long yOrigin, long width, long height) {
-		//Timing ti=new Timing();
-		//System.out.println("Change - " + width + "x" + height);
 		if (tt != null)
 			tt.cancel();
-		/*
-		 * if (width > 640 || height > 480) { tt = Bukkit.getScheduler().runTaskTimerAsynchronously(PluginMain.Instance, () -> display.setVideoModeHint(0L, true, false, 0, 0, 640L, 480L, 32L), 5, 5);
-		 * return; // Don't even try to render too large resolutions }
-		 */
 		tt = Bukkit.getScheduler().runTaskAsynchronously(PluginMain.Instance, () -> {
 			try {
 				display.querySourceBitmap(0L, holder);
-				//byte[] arr = PluginMain.allpixels.array();
 				long[] ptr = new long[1], w = new long[1], h = new long[1], bpp = new long[1], bpl = new long[1], pf = new long[1];
 				holder.value.getTypedWrapped().queryBitmapInfo(ptr, w, h, bpp, bpl, pf);
-				//System.out.println("Arr0:" + ptr[0]);
-				//System.out.println("whbppbplpf: " + w[0] + " " + h[0] + " " + bpp[0] + " " + bpl[0] + " " + pf[0]);
 				if (PluginMain.direct) {
-					//PluginMain.pxc.setSource(ptr[0], (int)w[0], (int)h[0], PluginMain.MCX, PluginMain.MCY);
 					pointer = new Pointer(ptr[0]);
 					this.width = (int) w[0];
 					this.height = (int) h[0];
@@ -123,8 +114,6 @@ public class MCFrameBuffer implements IFramebuffer {
 					else
 						PluginMain.allpixels.limit((int) (width * height * 4));
 				}
-				//System.out.println("Change!");
-				//System.out.println("Change task took "+ti.elapsedMS()+"ms");
 			} catch (VBoxException e) {
 				if (e.getResultCode() == 0x80070005)
 					return; // Machine is being powered down
@@ -134,20 +123,11 @@ public class MCFrameBuffer implements IFramebuffer {
 			} catch (Throwable t) {
 				t.printStackTrace();
 			}
-		}); // Wait 1/4th of a second - Don't
-		//System.out.println("Change took "+ti.elapsedMS()+"ms");
+		});
 	}
 
 	@Override
 	public void notifyUpdate(long x, long y, long width, long height) {
-		/*if(tttt != null)
-			tttt.cancel();*/ //We are getting updates, but the pixel array isn't updated - VB reacts slowly
-		/*tttt = Bukkit.getScheduler().runTaskLaterAsynchronously(PluginMain.Instance, () -> {
-			for (IRenderer r : PluginMain.renderers)
-				if (r instanceof DirectRenderer)
-					((DirectRenderer) r).render(PluginMain.allpixels, x, y, width, height);
-			System.out.println("Update!"); - The render is done each tick
-		}, 5);*/
 		Timing t = new Timing();
 		GPURendererInternal.setPixels(pointer.getByteArray(0L, (this.width * this.height * 4)), this.width, this.height); //TODO: Only copy changed part
 		if (t.elapsedMS() > 60) //Typically 1ms max