diff --git a/src/BackgroundProcess.php b/src/BackgroundProcess.php
index 599265c..11e47a9 100755
--- a/src/BackgroundProcess.php
+++ b/src/BackgroundProcess.php
@@ -21,11 +21,11 @@
  * @license   http://opensource.org/licenses/MIT The MIT License
  * @link      https://florian.ec/articles/running-background-processes-in-php/ Running background processes in PHP
  */
-class BackgroundProcess
-{
+class BackgroundProcess {
+
     const OS_WINDOWS = 1;
-    const OS_NIX     = 2;
-    const OS_OTHER   = 3;
+    const OS_NIX = 2;
+    const OS_OTHER = 3;
 
     /**
      * @var string
@@ -47,9 +47,8 @@ class BackgroundProcess
      *
      * @codeCoverageIgnore
      */
-    public function __construct($command = null)
-    {
-        $this->command  = $command;
+    public function __construct($command = null) {
+        $this->command = $command;
         $this->serverOS = $this->getOS();
     }
 
@@ -60,25 +59,43 @@ public function __construct($command = null)
      *                           currently $outputFile has no effect when used in conjunction with a Windows server
      * @param bool $append - set to true if output should be appended to $outputfile
      */
-    public function run($outputFile = '/dev/null', $append = false)
-    {
-        if($this->command === null) {
+    public function run($outputFile = '/dev/null', $append = false) {
+        if ($this->command === null) {
             return;
         }
 
         switch ($this->getOS()) {
             case self::OS_WINDOWS:
-                shell_exec(sprintf('%s &', $this->command, $outputFile));
+
+                $startDir = ".";
+
+                $descriptorspec = array(
+                    0 => array("pipe", "r"),
+                    1 => array("pipe", "w"),
+                );
+
+                $prog = proc_open("start /b " . $this->command, $descriptorspec, $pipes, $startDir, NULL);
+                if (is_resource($prog)) {
+                    $ppid = proc_get_status($prog)['pid'];
+                } else {
+                    throw new RuntimeException(sprintf(
+                            'Could not execute command "%s"', $this->command
+                    ));
+                }
+
+                $output = array_filter(explode(" ", shell_exec("wmic process get parentprocessid,processid | find \"$ppid\"")));
+                array_pop($output);
+                $this->pid = end($output);
+
+                //shell_exec(sprintf('%s &', $this->command, $outputFile));
                 break;
             case self::OS_NIX:
-                $this->pid = (int)shell_exec(sprintf('%s %s %s 2>&1 & echo $!', $this->command, ($append) ? '>>' : '>', $outputFile));
+                $this->pid = (int) shell_exec(sprintf('%s %s %s 2>&1 & echo $!', $this->command, ($append) ? '>>' : '>', $outputFile));
                 break;
             default:
                 throw new RuntimeException(sprintf(
-                    'Could not execute command "%s" because operating system "%s" is not supported by '.
-                    'Cocur\BackgroundProcess.',
-                    $this->command,
-                    PHP_OS
+                        'Could not execute command "%s" because operating system "%s" is not supported by ' .
+                        'Cocur\BackgroundProcess.', $this->command, PHP_OS
                 ));
         }
     }
@@ -88,17 +105,28 @@ public function run($outputFile = '/dev/null', $append = false)
      *
      * @return bool TRUE if the process is running, FALSE if not.
      */
-    public function isRunning()
-    {
-        $this->checkSupportingOS('Cocur\BackgroundProcess can only check if a process is running on *nix-based '.
-                                 'systems, such as Unix, Linux or Mac OS X. You are running "%s".');
-
-        try {
-            $result = shell_exec(sprintf('ps %d 2>&1', $this->pid));
-            if (count(preg_split("/\n/", $result)) > 2 && !preg_match('/ERROR: Process ID out of range/', $result)) {
-                return true;
-            }
-        } catch (Exception $e) {
+    public function isRunning() {
+        $this->checkSupportingOS('Cocur\BackgroundProcess can only check if a process is running on *nix-based ' .
+                'systems, such as Unix, Linux or Mac OS X. You are running "%s".');
+
+        switch ($this->getOS()) {
+            case self::OS_WINDOWS:
+                $result = shell_exec("tasklist /fi \"PID eq $this->pid\"");
+                if (!(preg_match('/INFO: No tasks are running which match the specified criteria/', $result)) && preg_match('/' . $this->pid . '/', $result)) {
+                    return true;
+                }
+                break;
+
+            case self::OS_NIX:
+                try {
+                    $result = shell_exec(sprintf('ps %d 2>&1', $this->pid));
+                    if (count(preg_split("/\n/", $result)) > 2 && !preg_match('/ERROR: Process ID out of range/', $result)) {
+                        return true;
+                    }
+                } catch (Exception $e) {
+
+                }
+                break;
         }
 
         return false;
@@ -109,19 +137,35 @@ public function isRunning()
      *
      * @return bool `true` if the processes was stopped, `false` otherwise.
      */
-    public function stop()
-    {
-        $this->checkSupportingOS('Cocur\BackgroundProcess can only stop a process on *nix-based systems, such as '.
-                                 'Unix, Linux or Mac OS X. You are running "%s".');
-
-        try {
-            $result = shell_exec(sprintf('kill %d 2>&1', $this->pid));
-            if (!preg_match('/No such process/', $result)) {
-                return true;
-            }
-        } catch (Exception $e) {
+    public function stop() {
+        $this->checkSupportingOS('Cocur\BackgroundProcess can only stop a process on *nix-based systems, such as ' .
+                'Unix, Linux or Mac OS X. You are running "%s".');
+
+        switch ($this->getOS()) {
+            case self::OS_WINDOWS:
+                try {
+                    $result = shell_exec("taskkill /F /PID $this->pid 2>&1");
+                    if (preg_match('/SUCCESS: The process with PID ' . $this->pid . ' has been terminated./', $result)) {
+                        return true;
+                    }
+                } catch (Exception $e) {
+
+                }
+                break;
+
+            case self::OS_NIX:
+                try {
+                    $result = shell_exec(sprintf('kill %d 2>&1', $this->pid));
+                    if (!preg_match('/No such process/', $result)) {
+                        return true;
+                    }
+                } catch (Exception $e) {
+
+                }
+                break;
         }
 
+
         return false;
     }
 
@@ -130,10 +174,9 @@ public function stop()
      *
      * @return int The ID of the process
      */
-    public function getPid()
-    {
-        $this->checkSupportingOS('Cocur\BackgroundProcess can only return the PID of a process on *nix-based systems, '.
-                                 'such as Unix, Linux or Mac OS X. You are running "%s".');
+    public function getPid() {
+        $this->checkSupportingOS('Cocur\BackgroundProcess can only return the PID of a process on *nix-based systems, ' .
+                'such as Unix, Linux or Mac OS X. You are running "%s".');
 
         return $this->pid;
     }
@@ -143,16 +186,14 @@ public function getPid()
      *
      * @param $pid
      */
-    protected function setPid($pid)
-    {
+    protected function setPid($pid) {
         $this->pid = $pid;
     }
 
     /**
      * @return int
      */
-    protected function getOS()
-    {
+    protected function getOS() {
         $os = strtoupper(PHP_OS);
 
         if (substr($os, 0, 3) === 'WIN') {
@@ -171,9 +212,8 @@ protected function getOS()
      *
      * @codeCoverageIgnore
      */
-    protected function checkSupportingOS($message)
-    {
-        if ($this->getOS() !== self::OS_NIX) {
+    protected function checkSupportingOS($message) {
+        if (!in_array($this->getOS(), array(self::OS_NIX, self::OS_WINDOWS))) {
             throw new RuntimeException(sprintf($message, PHP_OS));
         }
     }
@@ -189,4 +229,5 @@ static public function createFromPID($pid) {
 
         return $process;
     }
+
 }