Nvidia and ATI drivers issues

Long story, starts with my right click starting to lag for about 2-4 seconds whenever it was clicked about a month or so ago. At first it was intermittent then all the time and it affects the right click everywhere (desktop, applications, games). I discover its not the mouse, but I have no way of knowing what it is so I bind the side button next to it to right click and live with it and after about 3 weeks it goes away.

Then my 8800 gts dies while playing COD6 and I order an ATI 5770 to replace it, thinking its toast. While its being shipped I cook the 8800gts successfully in the oven and its back to working fine, but I've already ordered the 5770. Once it comes I uninstall all my nvidia drivers and run driver sweeper in safe mode then install it, but I can't get the ATI drivers or catalyst control center to run for the life of me. I talk with XFX tech support for a few days and I did everything I could before concluding there was no way I could make it work without reformatting so I return the card for a refund.

Now back on my 8800gts for about 3 days the right click lag just started up again after several hours of doing some work on Visual C# 2008 Express Edition. Now the XFX tech supports best idea was that there was something wrong with my .NET framework or C++ redistributable. Now that I've been working in VCEE for a few hours, both would have been used and thats when the right click lag came back so I'm thinking there is an issue with something in one of those. When trying to get the ATI drivers to work I reinstalled .NET framework 1.1, 2.0, and the C++ redistributable.

I'm looking for any ideas on how to fix mainly the right click lag and possibly the ATI driver issue, but I returned the card so that doesn't really matter anymore.

Boot into safe mode and see if you have the right click issue.

It is most likely from some 3rd party software you installed. Lesser known ones, more likely.