Designer View not showing the UI Elements!!

I started facing the weird problem recently on my new laptop.

I installed a fresh copy of Windows 8.1 and then Visual Studio Ultimate 2013.

It worked fine for the first few hours.

But the next time I opened it, it does not show the UI elements in the XAML Designer view. There's no error, the XAML code is perfectly alright and then on hovering over the supposed-to-be-visible elements, their outline is visible as well as selectable.

Surprisingly this is the case only with all new Windows Store Projects I open or create. The Windows Phone App Designer View works perfectly fine.

I reinstalled Visual Studio a couple of times and at last even formatted the OS and reinstalled it, but the problem still persists.

Please help ASAP!!