Hello friends! Well after spending U$D250 changed the motherboard, power suply (550watts reals) and 4gb RAM. Still a dualcore, but with 3.2GB of RAM usable.
I could spend a little more and have a I5 but I refuse to reinstall all programs and run them on virtualbox 32bit. Luckily for the hard drive with win7 was not damaged.
It's just a dualcore but more than enough for CFS2 and other related programs.
For me is a good ending.
Thank you all.
Cheers
Mario