Depth Buffer Driving me Crazy

bool MyDXFramework::Initialize(HWND hWnd){	//get the render window dimensions	RECT rc;	GetClientRect(hWnd, &rc);	unsigned int uiScreenWidth = 1280;//rc.right - rc.left;	unsigned int uiScreenHeight = 720; //rc.bottom - rc.top;/*	SetCursorPos(iScreenWidth/2,iScreenHeight/2);*/	DXGI_SWAP_CHAIN_DESC sd;	ZeroMemory(&sd, sizeof(sd));	sd.BufferCount = 1; //back buffer and front buffer	sd.BufferDesc.Width = uiScreenWidth;	sd.BufferDesc.Height = uiScreenHeight;	sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;	sd.BufferDesc.RefreshRate.Numerator = 60;	sd.BufferDesc.RefreshRate.Denominator = 1;	/*		tell DX how the back buffer will be used.		We want to render to the back buffer.	*/	sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; 	sd.OutputWindow = hWnd;	sd.SampleDesc.Count = 1; //multi sample properties. Which we will not use	sd.SampleDesc.Quality = 0; //disable multi sampling	sd.Windowed = true;	UINT iCreateDeviceFlags = 0;#ifdef _DEBUG	iCreateDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG;#endif	if (FAILED(D3D10CreateDeviceAndSwapChain(NULL,		D3D10_DRIVER_TYPE_HARDWARE, //use hardware rendering		NULL, //must be NULL for hardware rendering. Software rendering use only		iCreateDeviceFlags, //creation flags		D3D10_SDK_VERSION, //SDK version		&sd, //swap chain description		&m_pSwapChain, //swap chain		&m_pDevice))) //d3d device	{		Assert(0, "Failed to create swap chain.");;	}	/*		bind the back buffer of the swap chain as a render target, so		D3D10 can render to it.	*/	ID3D10Texture2D *pBackBuffer = 0;	//call GetBuffer() to get the back buffer	if (FAILED(m_pSwapChain->GetBuffer(0,		__uuidof(ID3D10Texture2D), //interface used to manipulate the buffer		(LPVOID*)&pBackBuffer)))	{		Assert(0, "Failed to get back buffer.");	}	/*		resource views are a resource that can be bound to the graphics		pipeline at a specific stage. In this case, we are creating a		render target view resource that will be used as the back buffer	*/	if (FAILED(m_pDevice->CreateRenderTargetView(pBackBuffer,		NULL, 		&m_pRenderTargetView)))	{		Assert(0, "Failed to create render target view.");	}	pBackBuffer->Release();	// Create depth stencil texture	D3D10_TEXTURE2D_DESC descDepth;	descDepth.Width = uiScreenWidth;	descDepth.Height = uiScreenHeight;	descDepth.MipLevels = 1;	descDepth.ArraySize = 1;	descDepth.Format = DXGI_FORMAT_D32_FLOAT;	descDepth.SampleDesc.Count = 1;	descDepth.SampleDesc.Quality = 0;	descDepth.Usage = D3D10_USAGE_DEFAULT;	descDepth.BindFlags = D3D10_BIND_DEPTH_STENCIL;	descDepth.CPUAccessFlags = 0;	descDepth.MiscFlags = 0;	HRESULT hr;	ID3D10Texture2D* pDepthStencil = 0;	hr = m_pDevice->CreateTexture2D( &descDepth, NULL, &pDepthStencil );	if( FAILED( hr ) )		return hr;	// Create the depth stencil view	D3D10_DEPTH_STENCIL_VIEW_DESC descDSV;	descDSV.Format = descDepth.Format;	descDSV.ViewDimension = D3D10_DSV_DIMENSION_TEXTURE2D;	descDSV.Texture2D.MipSlice = 0;	hr = m_pDevice->CreateDepthStencilView( pDepthStencil, &descDSV, &m_pDepthStencilView );	if( FAILED( hr ) )		return hr;	/*		now we have created both the render target and depth stencil buffer, 		we can bind them both to the pipeline so they will be used		at render time.	*/	m_pDevice->OMSetRenderTargets( 1, &m_pRenderTargetView, m_pDepthStencilView );	//create our viewport	m_oMainViewport.Width = uiScreenWidth;	m_oMainViewport.Height = uiScreenHeight;	m_oMainViewport.MinDepth = 0.0f;	m_oMainViewport.MaxDepth = 1.0f;	m_oMainViewport.TopLeftX = 0;	m_oMainViewport.TopLeftY = 0;	m_pDevice->RSSetViewports(1, &m_oMainViewport);	//Alternate View Port is not used at the moment	//setup alternate render target	m_oAltViewport.Width = 1024;	m_oAltViewport.Height = 1024;	m_oAltViewport.MinDepth = 0.0f;	m_oAltViewport.MaxDepth = 1.0f;	m_oAltViewport.TopLeftX = 0;	m_oAltViewport.TopLeftY = 0;	//CreateAltRenderTarget(uiScreenWidth, uiScreenHeight);	//CreateAltDepthStencilTarget(uiScreenWidth, uiScreenHeight);	m_bIsMultiThreaded = false;	//Rasterizer State	ZeroMemory(&m_RasterizerDesc, sizeof(m_RasterizerDesc));	m_RasterizerDesc.CullMode = D3D10_CULL_BACK;	m_RasterizerDesc.FrontCounterClockwise = false;	//m_RasterizerDesc.DepthBias = 1;	//m_RasterizerDesc.DepthBiasClamp = 0;	//m_RasterizerDesc.SlopeScaledDepthBias = 0;	//m_RasterizerDesc.DepthClipEnable = false;	m_RasterizerDesc.ScissorEnable = false;	m_RasterizerDesc.MultisampleEnable = true;	m_RasterizerDesc.AntialiasedLineEnable = true;	m_bIsWireFrame = false;	if( m_bIsWireFrame )	{		m_RasterizerDesc.FillMode = D3D10_FILL_WIREFRAME;		}	else	{		m_RasterizerDesc.FillMode = D3D10_FILL_SOLID;	}	m_pDevice->CreateRasterizerState(&m_RasterizerDesc, &m_pRasterizerState);	m_pDevice->RSSetState(m_pRasterizerState);	return true;}