Hello all, The other day, I got my 4x 30 pin 1mb SIMM 80ns modules in the mail. I wanted to bring the RAM of my machine from 1 to 4 MB. I opened up the unit and replaced all four SIMMs carefully and removed the jumper. Booted up the computer and everything seemed fine. About 2 minutes after the computer was running, pixels started to get distorted and the machine eventually froze. Restarting the computer would give me a Sac Mac 00000004 00000040 code. So I reopened the machine, cleaned all the SIMM slot pins with 91% isopropyl alcohol, and reinstalled the SIMM modules in different slots. Booted the machine and now I'm getting a sac Mac 0000000E 00000040 code with a black line going through the sad Mac icon. Is there something I'm doing wrong? I bought these modules from memoryX, and they appeared to look pretty much brand new.