problem installing latest freeware version

[LTEmperor]

Hi. So I have just uploaded all files into server and when I go to my website I get this message:

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

I have contacted my hosting provider and I was told:

It looks to be a redirect issue. I'm getting the following error in the logs:

AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace., referer: http://topniaga.vip/

I do see a lot of redirect code in the .htaccess file. Do you know what it relates to? It might be created by a plugin for example.

So what's the problem? How do I fix it?