Can't even boot to installation screen

I'm back again at my Fujitsu with Pentium E5500 and am trying to install El Capitan (I know it's very old hardware but I think it should work) Today I got this even before getting to the installation screen:

http://imgur.com/1iNRkZt

Any ideas? Or if anybody has a recommendation for a config.plist? :D

submitted by /u/Jajalejandro
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