I have a 1.1 GHz Duron processor, just recently I found out that in system setup the cpu speed can be changed to 1.5GHz in plug n play settings but when I change the speed everthing turns blanc and the only thing running is my power supply until I reboot. Later I noticed that when I try to change the cpu setting it also changes some other setting from 100Mhz to 133MHz I'm not sure if this is the ram it's trying to change or not. But my ram is only 256MB of SDRAM @ 100MHz. I'm not sure if the cpu speed can't be changed because of the motherboard, ram or just wrong info in the bios settings. If it's the ram why would it be? I might get some DDR Ram @ 400MHz or so but would this increase be able to increase the cpu speed?