Two web sites won't load in any Browser

Was reading posts on this forum and saw EtreCheck mentioned several times. On April 6th, I downloaded the app and ran it, mostly out of curiosity. I deleted about six files the app claimed were orphan files unneeded (no I don't remember what they were). The next day I was unable to load either Best Buy or Home Depot web sites with any of my Browsers. Message just says "can't open page". This is for all Browsers (Safari, FireFox and Chrome). This is happening on a 27" iMac running Mavericks. 1 TB HD and 12 GB of RAM. I also have a laptop running Mavericks, and those two web sites open normally with all browsers on the laptop.

I suspect that something was deleted through the EtreCheck app that is causing this. I can't update to Yosemite on my iMac because I use QuarkXpress 9 and Quicken 2007, and Filemaker 11 extensively, and they will not run in Yosemite.

I printed a pdf file of the EtreCheck report generated on April 6th, but think I created the pdf after the deletions were made.

Any suggestions as to how to correct this or what is causing it would be greatly appreciated. I have a vintage iMac, 2.8 GHz, Mid 2010. I have screen shots of the error messages received when I try to access either of these web sites. All other web site load as normal.