So I'm always playing something here but when I put sonic the hedgehog (SG) to run it didn't load... I've already tried the right button of the mouse (suggestion in other thread) and already tried uninstalling the plug in, programs and turned off the computer... nothing is working, so what happened?

Once I found it (wow, there are a lot of hacks for that game), it loaded fine for me.

The only other thing that I can think for you to try, if you haven't already, is to delete the ROM from the plugin. Maybe it got corrupted somehow? That's just a guess. When you uninstall and then reinstall the RGR Plugin, I don't think it actually removes the ROMs so it might be from the original time that you tried to play it.

To remove the ROM, go to the Start menu, select Programs, select Vizzed Retro Game Room, click Open Plugin Data Folder.
At this point your computer should say "Please wait while windows configures the Retro Game Room Plugin"
Once it loads, select Downloads (NOT ROMS).
Mine is listed as Sonic_The_Hedgehog_(W)_(REVXB) - It's a .zip file which makes it even more likely that it got corrupted somehow.
Deleting it will force the RGR Plugin to download it once more when you try playing again. Let me know if your file name is different than mine - that could mean you're trying to play something other than https://www.vizzed.com/play/sonic-the-hedgehog-gen-online-sega-genesis-3371-game

If you try all of that and it still doesn't work, I recommend smashing your computer with a very large hammer...

Good luck!

thephantombrain :  YEEEEEEEEEEEEAH thank you SO MUCH  my Rom was with the same name 

It's good to know that was the solution. Game on!

Local Mods : this problem has been solved.