New Blender dnwld on new rebuilt won't show default 3D scene or any other.

Thanks in advance, really appreciate all the friendly Blenderheadese…
Here’s a question? Just got a rebuilt Sony Vaio all in one jobby excellent condition, but after opening Blender instead of the square and camera there’s a small yellow dot in the middle of the manipulater circle in the window instead. I can some what move both around but can’t zoom in or out. Really Really wierd.:o

check your video drivers