I just upgraded the memory in my PM7500 to 48 Mb. Now, after it has been off for several hours, the monitor (14" Apple Plus) stays dark when I start up. If I reboot, the monitor is fine. System 7.5.5, no ram doubler. Any advice on this problem and on the best memory slots for three 16
Mb DIMM's in a 7500 (I have no manual)? I have tried slots A1, A2 and B1 and A1, A2 and A3.