Admin page not loading correctly

Thanks @deepvision for your help!!
Right so now i'm back to blank white page after login.
Also happens at shopping checkout...

Blank pages might mean errors. You can find them in the system/logs/error.txt
If there are none, then probably those are parsing error because of modifications.
To display errors you can try the following:

1. backup /index.php
2. add the following two lines of code to the admin/index.php just after the first "<?php" line so it looks like this: The same thing can be done to /index.php to show front end errors.

errors on admin login.
------

Notice: Use of undefined constant ‘display_errors’ - assumed '‘display_errors’' in /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/admin/index.php on line 16 Notice: Use of undefined constant ‘log_errors’ - assumed '‘log_errors’' in /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/admin/index.php on line 17 Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/admin/index.php:16) in /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/vqmod/vqcache/vq2-system_startup.php on line 16 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/admin/index.php:16) in /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/vqmod/vqcache/vq2-system_startup.php on line 16

looks like ' character has been copied or saved incorrectly. Or maybe there is encoding issue

try this one

I believe this is the error generated.
-----------
2015-07-10 12:07:52 - PHP Warning: Cannot modify header information - headers already sent by (output started at /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/admin/index.php:17) in /hermes/bosnaweb09a/b1522/ipg.binghisboutiquecom/vqmod/vqcache/vq2-system_engine_controller.php on line 45

It does not look like it

@deepvision...whats your advice on moving forward?

Add the following code to the index.php properly I can do it for you if you want.

Ok pls,
What do you need from me?