I'd suggest rebooting in Safe Mode with the bare minimum programs - just those that will run your PC. It's time consuming, if you are not sure which program is causing the problem, but it's the most thorough way to find the problem program.
You will need to activate programs, one by one, start your autocad, then see if you are still having a problem. If you are not, then go on to the next program, until you find the source. I'd recommend disabling the program you believe is causing the problems, then go through the rest of them to make sure it is not something else.
Hopefully, it will be some insignificant program that you can uninstall and do with out.
To start in Safe Mode:
- Click on the Start button.
Click on Help and Support.
Type safe mode in the search box.
Press the Enter key, on your key board.
Click on the link (in the left-hand column) for Start Windows in safe mode.
Follow the instructions given on the right.
I'd recommend printing the instructions so you can refer to them while you are troubleshooting.
You need to have a great deal of patience; it will take as much time as you have programs (in my case, it would take me several days, given the large number of programs I have on my PC).
You will need to start, and restart, your PC quite a few times during this process. I am not a "tech-head", so I don't know what else you can do if this doesn't work.
Hopefully, this will work... one more thing: it may be a good idea if you can get a fresh copy of the program. Have your friend burn a new CD. Barring that, I will say a little prayer that it works for you.
Rose