Nvidia’s GPU problems had so far been confined to laptops only, but now HP says the faulty graphic chips are also to blame for similar problems in its desktops. Specifically, the company has confirmed that 38 different models in its Pavillion Slimline range of desktop machines are prone to suffer from loss of video output or booting problems.

HP is extending the warranties on these problems for an extra year or until December 31st, 2009 and will replace the motherboards for free under the plan. The increasingly widening scope of Nvidia graphics failures is bad news for the graphics vendor, which is already being sued by its shareholders for allegedly covering up the problems with the faulty GPUs.