i bought a steam code from ebay and it worked, but the game won't download because it says it says "please specify location of part 11 to continue- by default all the files should be placed in the same folder as the installer, browse and specify the right path". every time i do this i can't find the part 11 file. i'm quite new to RPGs and have never bought a digital download before, so i'm not sure what to do. any help would be appreciated thanks.

The Witcher 2 has a multi-part Windows installer. You need to download all 13 parts to the same folder, e.g. w2install: If it's complaining about part -11 check to see nothing has renamed setup_the_witcher2_ee_3.4.0.25-11.bin. Otherwise, download that file again.

Bin 11 is actually part 12 of 13. see pic
Make sure your .bin's haven't been renamed to .rar's
redownload 11.bin.

ok thanks, leave it with me