HP has offered free repairs for 38 models of its Pavillion Slimline range of desktop machines, which are having problems with Nvidia graphics units.
Last week, Apple admitted similar problems with MacBook Pros and offered free repairs to affected customers.
HP said on its support site that the problem was "attributable to the computer's motherboard". Some machines either have problems booting or will not show video.
The company is offering a free repair for anyone with a non-working machine which is within 12 months of the expiry of its warranty, or until 31 December 2009, whichever is sooner.
Anyone with a machine which won't boot or show video, and which is on this list of model numbers, can apply for the repair.
Nvidia warned the US Securities and Exchange Commission back in July that problems with its graphics chips were likely to cost it money. ®