[Q] Restoring Rooted BlackScreen Evo to Stock

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http://forum.xda-developers.com – So I dropped my phone today and now the screen doesn't work. I can get calls and the bottom row of buttons light up but screen stays black. Upon researching this, it appears the screen is bad now. I have insurance on phone and would like to take it to get repaired however, would like to unroot so the techs do not void my warranty when they see I'm rooted. Now is there a way to restore to stock when I cannot see anything on phone? Restore straight while hooked up to laptop? I used the unrevoked method to root and I'm on Fresh Evo Rom, btw. Thanks for any replies (HowTos)