My pc currently has a 512mb's of ddr1 @ 400mhz (3200) that works fine, but slow. I recently bought 1gb of ddr1 @ 333mhz (2700)... After I installed it in the second dimm, all the pc would do is beep. The motherboard supports up to 2gb's and I have already switched slots and installed the the module by itself(in both slots)... same ole same ole...Does anyone have an idea of why it wont work?
More aboutboot installing memory
It's possible that your PC can only support PC3200 memory or the memory that you bought isn't compatible.