Recently I upgraded my Dell XPS 120 (Pentium) to Pentium/MMX by using Powerleap's adaptor. It works fine with original 32mb (EDO). However, when I pulled out 2*8mb from and added 2*32mb EDO chips into slot 1&2 (80mb total), the system became very unstable. The error message indicated "programs perform illegal operation" appeared frequently. When I pulled out the rest of 2*8mb chips, left only 2*32mb onboard, the system would crash immediately after windows start.
However, when I replaced the 233 MHz with the original 120 CPU, the system worked fine.
Does this crash have something to do with BIOS Ram setting, such as memory wait state adjustment?
As Dell doesn't offer option to change this setting, what's the best way to make this adjustment?
Thank you for your advice.