CPU only running at 1GHz

Check the BIO for anything SpeedStep on Intel but AMD Cool bla, bla always disable that too. Some Extra Power savings under the bios too can be disabled to increase available RAM on 64-bit systems this works not on 32-bit. Also any memory shared out for Video can be lowered too if you don't plan on doing any fancy graphics like min is 128MB to 256MB.

Also under the OS:

select orb
select run (if not there type) select orb + r
type: msconfig
select boot
select advance options
select the number of processors you have
select the amount of ram you have
save
apply
reboot