How do I install my display driver back?

[Roy_14]

I've accidentally uninstalled my display driver (AMD Radeon 8470d) using AMD cleanup utility and now I'm using Standard VGA. I did try to install AMD catalyst 15.7 but every time I try it says "failed to load detection driver". How do I install my display driver back?

My processor is AMD A6-6400k APU with Radeon(tm) HD Graphics 3.90 GHz.

 

[Wayfall]

Restore system files and settings (including drivers):
http://windows.microsoft.com/en-gb/windows7/restore-system-files-and-settings

 

[Zkye]

Try this: http://www2.ati.com/drivers/auto/autodetectutility.exe