Hi, could somebody please offer me some advice on how I might solve the following problem.

Recently Mcafee security centre detected a .dll file called newdotnet as a PUP and asked if I wanted to remove it. When I clicked yes, the computer froze, none of the windows could be closed and so I had to shut the PC down at the mains, as CTRL ALT DEL didn't work either. That happened a few days ago.

Since then, we have had a few problems with pop up windows. For some reason the pop up blockers had been disabled on the computer. Today my sister was the last to use the PC and she said that it got to a point where many pop ups were appearing and overwhelming the system. Internet explorer was crashing aswell, and about five 'end now' windows appeared.

We tried to turn the computer on later and the start up options menu came up asking if we want to start in safe mode or normally. I tried both options, but with each time, the computer would just reboot, and the same screen appears. So it seems its on a constant loop.

Firstly I would like to know if this has anything to do with the .dll file, and second, I want to know how I would be able to resolve this problem without having to resort to losing all of my saved work on my computer! I'll be devastated if I've lost all of this! Any advice would be dearly appreciated.

Cheers, **Purplepixie**