HP identified a design flaw in some memory modules supplied by third parties that were shipped with HP and Compaq Evo Presario, Pavillion and Business notebooks, and in HP-branded notebook memory accessories.
The supplier has issued a utility, available from the HP website, that can check for problems. HP has promised to replace any memory found to be at fault, if it is notified before 31 December.
Analyst company Forrester estimated that about one million machines are affected. In a paper on the flaw, analyst Simon Yates said the recall would put extra workload on IT departments.
Yates said suppliers other than HP were likely to be affected, but in a statement on the flaw IBM said, "We have not detected any problems with our qualified memory sources that are con-sistent with the HP reported problem."
Dell said, "[Our] test and analysis has not revealed any problems."