Windows 7 no longer access from XP 64 on computers with 7

[angel8888]

When a network connecting two Windows 7 64-bit among themselves, can no longer access from XP 64 on these computers.

If I do not go with Windows 7 at the second similar Windows 7, the network and access between XP and 7 is wonderful. As soon as there is a connection between two windows 7 based computers - XP does not have the right to access to them. But windows 7 computers at the same time have access to computers with windows xp

Only helps break the link between windows 7 based computers and reboot ...


Please!!!!!!!!!! Help!!!!!!!!!!!!!