[support] Drupal 7 does not clear caches.

[Roger]

Hello all.
Apologies in advance for a long explanatory post.

As per previous post because I am desperate.
Our web site in Drupal 7.34 ceased to work publicly yesterday afternoon.
I loaded the new Skeleton theme via /themes/ [Install New theme] all 
worked well.

I changed the css so that the page had a background colour, all worked 
for 3-4 hours then stopped with browser errors. Safari in the url field 
flicks between /domain/index.html and domain/folder/?=index.php about 20 
times then fails.
Chromium fails with Web page not available
Firefox fails with This page isn't redirecting properly. - There are no 
redirects other than in Drupal index.php. Google is no help so far.

I reset the theme to the original mayo, cleared cache, worked once then 
failed so reverted to core Bartik and cleared caches every alteration 
but problem exists.

Now I find in cPanel/phpmyadmin that Drupal 7 has not cleared the 
database caches and apparently never does so, the caches contain 
reference to other themes and redundant data, so what's the point of 
Drupal Clear Cache if it doesn't clear the data.

When I last used drush cc all via ssh terminal it destroyed the database 
making it unusable so we reverted to an earlier version. Therefore Drush 
is not an option, too dangerous.

I fresh installed drupal-7.34 on the server, copied the /sites folder to 
the new install, /settings.php refers to the original database, started 
it and it too fails. So either something in the sites folder or in the 
database is damaged, so I am really stuck and would appreciate help. 
Deleting the Skeleton theme and clearing caches does not remove traces 
from the database caches.

  I have 3 other drupal 7 installs and all work perfectly, only the main 
one fails.
So a question would be, If I created a new database in cPanel then 
dumped each table one at a time from the original but not the caches 
into it what would that do, would it work?

What I also do not understand is, when I url to 
www.domain/directory/user everything works, the theme works login works 
and loging in as Admin the theme and site is perfect but as anonymous 
user  browsers fail.

Waving the white flag here and need help desperately
Thank you in advance
Roger