Can't download Binary Files ("Canceled")

On an Hp Pavilion Entertainment PC.
Windows Vista Home Premium.

My hard drive died a few months and my brother recently fixed it, but I'm quite certain I'm missing some drivers or something. I've attempted to download Realtek's High Definition Audio, but everytime I do, it gets canceled. Upon 'retrying' the download will complete, but it disappears from my Containing Folder, and I can't do anything with the file. I also have a quickplay button I can't seem to fix, and I can't download HP Support Assistant (same problem as with the realtek stuff). .

I wouldn't be so upset if my desktop hadn't died before I got my laptop back. I just miss my music

 

Anybody?...