Blender crashing on Windows 64bit

I have been trying to run Blender on my Windows 64 bit system but so far I haven’t been able to. It installs successfully but on startup it freezes and I get the APPCRASH message. On the other hand the 32 bit version works fine. Does it have something to do with setting the pythonpath? Any thoughts would be welcome!

Post the specs of your machine. That may have something to do with it.

What does the debug window say? If you get chance to look.

Hello, happy new year and thanks for your answers. My system specifications are :
Intel Core i7-3770 @3.40GHz 3.90ghZ
NVIDIA Geforce GTX 560
OCZ Agility 3 120GB SSD
Windows 7 Ultimate 64 bit
I’m also attaching the error message I get on startup. Note that the 32bit version works fine.

Thanks in advance!

Forgot to write down the motherboard model, it’s Gigabyte Z77m-D3H DDR3