Apparently one of the programs you installed is loading something at bootup that doesn't shut down when it's supposed to, so here's what I recommend. Hold down the Windows key and press the R key. Type MSCONFIG and hit enter. Click the Startup tab. Here you'll see a list of tasks getting started automatically when you boot up. Look for the ones related to the programs you installed and uncheck them. It won't hurt to uncheck everything except your antivirus program, but try just unchecking the ones related to the new programs if you can. Then click OK and reboot. Your new programs will still run, they'll just take a second or so longer the first time you start them.

Good luck.