Nvidia has just pulled its latest driver release, citing "a bug" that, according to the company, is causing issues with fan control, but some users report is also resulting in instability. The Nvidia driver issue affects the very latest official release, numbered 595.59, and Nvidia is advising users to uninstall this version and perform a clean installation of version 591.86 instead. With Nvidia dominating the graphics card market at the moment, the potential number of users affected by this issue is vast. However, indications are that the driver release is still stable enough that you should be able to boot up and install a stable version without issue. Nvidia has also already removed version 595.59 from its download page, with the latest release reverted back to 591.86.