nightcraw1er.488: Start by giving some description of the problem. Are you using galaxy or classic installers. What happens exactly, any error messages, windows popping up anything? One thing which is always possible is your graphics card, is it powerful enough to run the game, onboard ones really don't cut it. There is also the support bar where you can submit for help.
Thee_Oddworld: so i downloaded it on gog galaxy 1.2.45 but when i hit play all it does is it says cloud syncing then stops then does it again but then witcher 2 does not launch. i would like to know what is going on with my pc that is not letting witcher 2 open
Ah, galaxy. It does sync your hard drive located game saves with the server. Is it possible you have blocked it with a firewall, or your anti virus is blocking it? Sounds to me something like that. I don't use galaxy so can't really help there, but I would check that. Also there is another thread, in the witcher sub forum:
https://www.gog.com/forum/the_witcher_3_wild_hunt/cloud_save_sync Which has some cloud syncing issues and where to report them, or use the support area to put your problem in to gog.
Or download the files directly from the website (under classic installers) and remove galaxy, this is my preferred method.
Oh, and to note you can turn syncing off, though you would have saves only locally then:
https://www.gog.com/forum/general/question_how_to_deactivate_cloud_synchronisation