Need Help! Can't Login to My WP Admin :(

Hi guys! I need your help on Wordpress.

I just transferred my hosting from Underhost to Ultratechhost. But the problem is every time I login to my Wordpress admin panel it goes to:
Internal Server Error

I can browse the login page but once I enter it goes to that error every time. I really need your help guys. I already upgraded to Offshore VPS with 1K+ RAM so I think that is not the issue.

Your reply will be much appreciated..Thank you very much!

Make sure you have set up your new database with permissions however the error does not reveal very much. Make a new document and rename it xxx.php then add the code below, make sure php is running correctly.
You may find you need to do a fresh install of wordpress and transfer the db over.

Just re-install the wordpress and transfer the data base again as there is no other solution as I feel.