hell everyone, new member here

I just bought an Xbox for $75 (yay!) and it has EvolutionX along with a whole bunch of other stuff on it (emu's and Xbox Media Center). I can also tell that the case has been opened so it's probably been chipped too.
From what I've read around the internet on how to
install EvolutionX it seems like it's just mainly a replacement xbox dashboard that you just put on the xbox's HD. that's cool and all, but I want my xbox to be a normal one, with the normal M$ dashboard. I've looked through the HD using XMC and it seems that all the correct original Xbox files were backed up onto C in folders. I even tried launching the orignal dashboard from XMC but I get the call service screen with an error code of 21. And it'd be really great if the MS Dashboard option on EvoX's main menu actually launched the db but it just brings me back to evox (but that sounds like an evox.ini problem)
anyways... is there any way to restore my xbox to normal, or even just get the dashboard to run?
any help would be great. ask any questions and I'll try to answer them the best I can
Put in Slayer's Evox Autoinstaller 2.6. There is an option to rstore retail HDD. Also, make sure your HDD is locked. Finally, FTP to your C drive to ensure all MS files are there. If they are, you can now remove the modchip and play normally.
What you did is just formatted, therefore deleted, everything on your HDD. Then, you reinstalled things on the HDD so it is just like the HDD in a brand new Xbox.