Solved Windows Installer and Graphics Card Drivers

Hi,
Long story short - My PC gained a rootkit, which in turn, damaged some system files. One of these was something to do with drivers. I ran AVG's recovery CD, and it did its job removing the threat.
Since then, my computer has been fine on the infection-front.

However, I had to reinstall drivers for quite a few things. My LAN port no longer works (and doesn't seem to like the new drivers I downloaded), but I've worked around that with a USB - Ethernet connetor, which works fine.
My graphics card, a ATI 5570 however, isn't going quite so well.
I already had a copy of the installer for this as I had to downgrade the drivers recently anyway, due to a compatability issue with an older game, so I know this installer works perfectly.
However, since the removal of this threat, the installer for the Catalyst Control Centre and display drivers isn't fuctioning as desired. It only installs CCC, and NOT the display drivers:

When the installer completes, it says 'Installation Complete (warnings occured during installation), although nothing is given in the log file in terms of errors.

Knowing I still had the original install CD, I popped it in and navigated to the drivers section, where it would normally allow you to install just the display drivers.
This starts up, but then gives this error:

Followed by this:


I then thought this might be due to Windows Installer/Installshield, so I tried to redownload that from the Microsoft Website. Ok, so I open that:


Yes, the Windows Installer service is running. I've tried restarting that service, restarting my computer, and tried in safe mode (but it can't start that service in safe mode anyway)

Any help much appreicated!

Sometimes these rootkits and other rogue malware can be obviated by doing a system restore back to before you got it. Might be worth a try.

Unfortunately, there's no restore points earlier than Yesterday, when it's created a fair few in trying to install the drivers!

Nobody that knows what they are doing will help you. Rootkits are beyond horrible and cannot be garrenteed to be removed.

Do yourself a big favor and reinstall windows after a good format.

You probably have more missing and corrupt files you haven't found yet, so a reinstall is only garrentee.

Oh, and a system restore is the absolutely worse thing to do when infected, or have been infected.

Thanks for the advice.
Is there any way I can keep things like My documents and downloads on the same Hard Drive, but still reinstall Windows as new?

I think I'm probably better off just taking what I need though, and using one of the many millions of memory sticks I have!

I would definitely copy off your documents first and foremost, just to be on the safe side. Downloaded files can usually be downloaded again and are a lesser priority. But anyway, I agree with Patonb that these rootkits can be seriously destructive and make it difficult to get back to normal afterward. With a significant compromise of that degree, it is best to start fresh again. It's a pain, but well worth the peace of mind.

My documents were safely transfered to my laptop, and Windows was reinstalled.

Everything now works again

Thanks for the advice

Best thing you could have done. I've seen many threads of issue with rootkits well after they were "removed"

Cool, great to hear your system is back to normal.