I recently had to super-sleuth my way through a variety of PC problems until discovering that one of my RAM cards was faulty. I have an HP Pavilion dx6650us Notebook PC (with Duo processors), 32-bit OS, running Vista Home Premium. While restoring my hard drive (before I discovered the hardware problem), I noticed that recently installed updates were not registering with HP Advisor. HP Health Check won't update and shows 3 alerts continually: one of the critical maintenance updates is for Windows driver updates and Vista SP1; another (of medium concern) is a Realtek High Definition Audio Driver; the last notifies me that the phishing filter is turned off. If I use the wrench icon to repair the phishing filter, the notice will go away until the next time I access HP Total Care Advisor.
The audio driver can be re-installed, though part way through installation it notifies me that this file already exists on the PC and asks if I want to overwrite it (yes, I have even over-written it trying to get this resolved). By the way, I was able to successfully install driver updates and Vista SP1 by reading various tech blogs and installing Windows System Readiness Pack Tool KB947821 before installing SP1. I contacted HP support chat online for assistance with SP1 (they didn't seem to know that for only 1 computer I should be installing directly from Windows Update instead of installing the commercial version which is a much larger file). Likewise, when I chatted with HP about the HP Advisor sticking problem they passed me from tech to tech until one advised me to re-install HP Total Care Advisor via a non-HP site. I uninstalled my sticky Advisor and tried, unsuccessfully, to install the new program. I ended up without the Advisor at all, though I still have Windows Update and HP Update. I figure it is a blessing in disguise.