I just bought a 256MB SDRam stick(My PC is old but, I still use it.) but, my bios wont recognize it. In the bios, it reads Memory Bank 0- 128MB SDR, Memory Bank 1- Not intalled even though both slots are full. The guy at the computer store where I bought it from wants to charge me 150 dollars for tech suppoert before he'll help. I s there any way to get my PC to recognize the ram?