SwapBuffer Nvidia Crash - windows

Question

EDIT: I thought this was restricted to Attribute-Created GL contexts, but it isn't, so I rewrote the post.
Hey guys, whenever I call SwapBuffers(hDC), I get a crash. If I create it with WGL_CONTEXT_DEBUG_BIT_ARB, I get a
Too many posts were made to a semaphore.
from Windows as I call SwapBuffers. What could be the cause of this?
Update: No crash occurs if I don't draw, just clear and swap.
Here's a bit of the code with the irrelevant bits cut out:
static PIXELFORMATDESCRIPTOR pfd = // pfd Tells Windows How We Want Things To Be
{
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
PFD_DOUBLEBUFFER, // Must Support Double Buffering
PFD_TYPE_RGBA, // Request An RGBA Format
32, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
24, // 24Bit Z-Buffer (Depth Buffer)
0, // No Stencil Buffer
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
if (!(hDC = GetDC(windowHandle)))
return false;
unsigned int PixelFormat;
if (!(PixelFormat = ChoosePixelFormat(hDC, &pfd)))
return false;
if (!SetPixelFormat(hDC, PixelFormat, &pfd))
return false;
hRC = wglCreateContext(hDC);
if (!hRC) {
std::cout << "wglCreateContext Failed!\n";
return false;
}
if (wglMakeCurrent(hDC, hRC) == NULL) {
std::cout << "Make Context Current Second Failed!\n";
return false;
}
... // OGL Buffer Initialization
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glBindVertexArray(vao);
glUseProgram(myprogram);
glDrawElements(GL_TRIANGLES, indexCount, GL_UNSIGNED_SHORT, (void *)indexStart);
SwapBuffers(GetDC(window_handle));

Answer 1

I found the answer. The SwapBuffer(hDC) command was simply where the error occurred, but did not have anything to do with it. I believe my error was due to something related to my indices, as if I draw only the first mesh in the model, everything works as intended. Nvidia crashed with this error, Intel went on and disregarded it.
Nonetheless, thank you to Chris Becke for pointing out a future memory leak using GetDC(hwnd).