WinXP Install Problems

We have a system that passes the WinXP Compatibility Test. When we try to install, it starts copying some files across and then fails. Always at the same DLL file it is trying to copy across. Everthing in the system including memory has been replaced, always with the same results.

We have since used the same CD doing good installs on other machines.

The Error during the copy process just states “Failed to copy xxxxx.dll during setup”. (xxxxx being generic as after it copies about 10% ofthe required files, it then fails on all others. The first file it fails at is always the same.

We have tried other CDs on the same machine. The only things NOT replaced is the CPU and MB??? Any ideas???