ddr2 problem in quartus 10.0

For a simple test of the DDR2 memory, you don't absolutely have to add a clock adapter. SOPC builder will add automatic clock domain crossing logic if needed. Although, the automatic logic is inefficient and slow.

If you really want to give the DDR2 memory a work out, you really should use a DMA component. Although, for your purposes even a simple test is probably good enough. Even if the memory is partially flaky, you should still get something other than a black output from the frame buffer.

I doubt the 64 bit Windows 7 is the issue. I have used almost every Web Edition of Quartus since 8.0 on Vista 64 bit without issue.