I have done a quick search of the SL list archives for TPM without a positive result. Boot message: a tpm error (7) occurred attempting to read a PRC value There is a set of packages that deal with TPM: tpm-tools and others. On the web, I have found that one method to deal with the diagnostic simply is to blacklist tpm echo blacklist tpm_tis > /etc/modprobe.d/tpm_tis.conf Is TPM vital to a standalone Internet attached workstation? Will tpm-tools allow one to accomplish the effect of the blacklist? Note the machine does boot and run. However, diagnostics normally should not be ignored. Yasha Karant