My Blender quits after I switch to "cycles render" I am new to Blender, and when I change the render options from  "blender render" to "cycles render", my blender quits itself, and I have to reopen it.

My blender is the latest version (2.75a), and my computer is a 64bits Windows 7.

Could anyone please advise me on this issue?

Best,
Matthew
You should report it, just in case there's a bug. Versions with number + letter (like 2.35a) have critical fixes, but almost certainly still have bugs that should be reported and documented.