We understand that computer issues can be frustrating but can I ask you once again to only use the edit tab for adding information while waiting for a reply, I am in the UK and so most likely not online when you are + neither of us can be here 24 hours a day.
We have no way of knowing what you have done but if it is as bad as what you suggest it may be best for you to start afresh but this time follow the steps that I provide and do not take any shortcuts.
So that we can see what drivers are presently installed do the following;
Run DriverView from here no download is required.
Save the results as a Text File.
Copy paste the results into your next reply.
I am not suggesting that you download Driver Pro btw and the link is for information purposes only.
If you follow the steps provided you will not need to pay for drivers that are readily available for free from Dell.