1. A method for locating in a computer system memory modules on the basis of a failing or defective memory address, the computer system including a transparent memory error correct routine, comprising the steps of: disabling the transparent memory error correction routine; testing system memory in the computer system; enabling the transparent memory error correction routine; writing a data value containing a bit error to the failing or defective address; reading in data from the failing or defective address; recording the failing or defective address; and identifying from the failing or defective address the associated physical memory module of the computer system.