<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def set_computer_desc(desc=None):
    '''
    Set the Windows computer description

    Args:

        desc (str):
            The computer description

    Returns:
        str: Description if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_computer_desc 'This computer belongs to Dave!'
    '''
    if six.PY2:
        desc = _to_unicode(desc)

    # Make sure the system exists
    # Return an object containing current information array for the computer
    system_info = win32net.NetServerGetInfo(None, 101)

    # If desc is passed, decode it for unicode
    if desc is None:
        return False

    system_info['comment'] = desc

    # Apply new settings
    try:
        win32net.NetServerSetInfo(None, 101, system_info)
    except win32net.error as exc:
        (number, context, message) = exc.args
        log.error('Failed to update system')
        log.error('nbr: %s', number)
        log.error('ctx: %s', context)
        log.error('msg: %s', message)
        return False

    return {'Computer Description': get_computer_desc()}