There may be a fix in there, so check the list of drivers or known issues. Nvidia has released a new set of drivers to coincide with the game's launch. 'Seems like there's a compatibility problem with mobile Nvidia cards.' 'After launching the game, re-enable the Nvidia card quickly. 'Open device manager, go to display adapters, and disable your Nvidia device so only the Intel card is enabled,' he said. Reddit user MustacheEmperor has posted the following workaround: Some users are reporting issues with the game not launching in either singleplayer or online through Steam when playing on a laptop. GTA 5 for PC not launching with Steam - laptops These are hardly GTA 5-specific and should be your first course of action when any game starts acting up. If that doesn't take care of it, there are a few other checks that you can do. Before you install it again, make sure GTA 5 is not running in the background - end the process through the Task Manager to be sure. Rockstar suspects this is due to an incomplete installation of the service and recommends reinstalling it. Please exit the game and re-install the latest version of the Social Club' to name a few. Error messages such as: 'Social Club failed to initialize,' or 'Social Club failed to load due to an incomplete installation. Rockstar's own Social Club launcher is responsible for a number of errors that show up when you try to run the game. The various Rockstar Social Club launcher errors The full steps of how you can do that in Windows, as well as the list of supported characters are through the link. Renaming your existing one won't work unfortunately. Rockstar is working on a fix, but until that becomes available, you'll need to create (or switch to) a new Windows account with Administrative rights. This could also cause the game to hang upon downloading a patch. 'The Rockstar update service is unavailable (code 1)' is one such error. If your Windows account name has some unusual characters or isn't based on the Latin alphabet, you're going to run into issues installing or playing the game. Update: A fix for this bug is rolling out today, April 17. GTA 5 not installing or not playing due to strange characters in Windows username

Rockstar has in turn acknowledged them and has posted step-by-step solutions.

GTA 5 users on PC have reported a few issues that have prevented them from playing.

Thankfully, in GTA 5's case, they are pretty easy to track and fix. With any major game launch, there's bound to be a few issues.

Install gta 5 for pc