I want to install the Intel Linux Graphics Drivers through the program, but everytime I've tried to install them this error comes up
W:GPG error: https://download.01.org Ubuntu Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8D8847D52F4AAA66 W:Failed to fetch http://ppa.launchpad.net/openshot.developers/ppa/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found E:Some index files failed to download. They have been ignored, or old ones used instead.
How do I fix this; I really want to install this so I can play games from Steam.
Processor: Intel® Celeron(R) M CPU 440 @ 1.86GHz
Graphics: Intel® 945GM x86/MMX/SSE2
32-bit Ubuntu 13.04