I have downloaded Windows Live Messenger 8.5 Beta and it downloaded the correct way without any problems. I clicked on 'Run' after it had downloaded, i then clicked 'Accept.' The second part to installing came up, it said something like 'we are now preparing your computer for installation.' It was going fine for a little while and then everything just cut off and the installation never worked. I tried re-installing again and the installation still didn't work. The exact same messenger has been successfully installed on another laptop but for some reason, not the one that i use the most.

Could someone please explain what the problem could be or does anyone receive the same problem?

I had the same problem. I downloaded the Spanish version and it worked fine. Then installed the English dll.

Please follow the instructions contained in Felu's reply to WLM 8.5 Beta installation problem.

Try this
Liveside.net Fix for installation problems

Thanks, i did exactly what the instructions said but the laptop still won't let me install messenger for some strange reason.