so i bought two 2gb stick of 800mhz ram for my computer but every time i try to boot into windows 10 or 7 64bit the cpu stays at 100% usage making it unusable,but when i boot into windows 32bit it works normally but only usase 3.5gb of ram and when i boot into windows 64bit with only 3gb of ram it also works normally and when i look in the bios it shows 800mhz speed but when i boot into windows i see the ram is capped at 400mhz per stick how do i fix my os or bios
cpu:pentiumd 925 3Ghz,4Gb DDR2 PC2-6400,chipset-ati Xpress 1250,LGA socket 775,motherboard-i cant find the model number because is says to be filled by o.e.m but the manufactoror is parckard bell bv,and this model is called berkeley i hope i can get help with this
