You'll sometimes need to run an XP Repair Install
to adjust it to run on different hardware.
What do you mean you reset the RAM? Did you reseat the sticks? What was the result of the RAM test? You were to test it with memtest86 for 5-6 passes.
I've asked you three times now where you got Windows 7 and if you burned the disk yourself. You probably have a bad installer so confirm the ISO and burn another using ImgBurn at 4x speed or write to flash stick using Universal USB Installer
It irritates me that I'm having to repeat these steps over and over when I have a dozen others waiting for help. Complete all the steps NOW or ask back how to do them. I'm not interested in why you think I'm wrong any longer.