bluffwood: " ..the sfc /scannow requires the original DVD and I don't have them handy.
I get some particularly irritating ads that pop up on new copies of firefox. .."
You can tweak some registry settings so a DVD isn't needed but using a DVD is better if you can find one. If you use a DVD then the files come from a source that wasn't involved in the malware infection. Files from your hard drive used to repair problems found by SFC might be ok but I wouldn't be surprised if there is malware that can change those files too.
I didn't see your earlier thread in the other forum so the following may be redundant. Check Firefox's extensions. With Firefox open, press the Alt key to see the menu across the top of the window, open the Tools menu, select Add-ons, in the column on the left hand side of the window select Extensions. You might have an extension installed that's generating advertisements. Check the home page and default search engine for Firefox. Normally a changed home page and search engine wouldn't generate adverts but changing those back to something that isn't dodgy is often overlooked by antimalware programs. Check the list of installed programs in Windows' Control Panel. If you have further questions about this then probably best to ask them in the Am I Infected? forum.
Good that you found a way to make your camera work.
Edited by Windont, 01 February 2015 - 11:30 AM.