Windows XP lost connection to Windows 7

by William
(Stow Ohio)

Have a Windows 7 desktop and a Windows XP desktop on same domain. Printer is connected on Win 7. I have 10 PCs printing to it. All of a sudden one PC lost connection to Windows 7 now it is saying not accessible. I can ping the win 7 PC from it just can not connect to it, but all other computers still can.