I am running Windows XP Pro SP3. I started having problems a few days ago when Chrome started using 50% CPU continuously, seemingly after visiting certain web pages. Nothing perculiar about these web pages, just general browsing including pdfs etc. It happened several times and Chrome would become unusable. I couldn't shut it down so had to kill it via task manager and then restart, would happen again some time later.
After a day or so I started getting the "Google Chrome has encountered a problem and needs to close" message everytime I start Chrome. Even though this message pops up at Chrome startup, if I don't click Close, Chrome continues to run and seems perfectly usable, although I'm not doing too much with it right now as I want to get to the bottom of this problem.
My problems appear to have started when a new version of Chrome came in (via gupdate I believe). I was running Chrome 40.0.2214.115 without problems. The new version is now 41.0.2272.89. This new version seems to co-incide with the Chrome startup error message but I think i was having the 50% CPU issue before this new version came in (not sure). When Chrome is updated it appears that the previous version is left intact (but renamed). I tried running this previous version but get the same Chrome startup error message.
I then did the usual things like clear browsing history/cache/cookies etc, all to no avail. I then uninstalled and reinstalled Chrome, still get the same startup error message after re-installation. Then started googling and came across the Google Update/Google Redirect/Google Chrome virus and started going down that path. I downloaded Malwarebytes and renamed it but it would not run. This gave me the first indication that I may infact be infected. Then started following the manual removal process outlined here: http://www.brighthub.com/internet/security-privacy/articles/73919.aspx
I checked LAN settings, proxy and DNS settings look OK and Hosts file looks OK. RKill will not run, even if i rename it. Also tried running TDSSKiller from Kaspersky (also renaming it) but it would not run.
So I am unsure if I am infected. But the fact that I am unable to run daignostic/removal tools, indicates to me that I am probably infected. Would appreciate any assistance as to where I can go from here.