Please do not Necro old threads.
1.7.10 is no longer supported on this forum due to its age.
Please update to a modern version of Minecraft to receive support.
Did you read my signature like I said?
It explains what file has the information we need to help you, explains where to find it, and gives two services we would prefer you used to post it.
Try going into the .minecraft\versions and .minecraft\libraries\net\minecraftforge\forge folders and deleting the folders for that version of Forge before re-installing.
I would recommend for the future that you get a text editor capable of doing Find & Replace, I tend to use VSCode but there are a lot of editors out there and it's mostly up to personal taste.
I can't really help you without a log, if your username for anything is your full name then maybe you should change that.
If you know how to use find and replace I suppose you could do that.