My friend asked me to take a look at his daughter's laptop, he said it was running really slow and was blue-screening.
As a safety, I booted to safe boot and went into MSCONFIG and disabled a lot of Jun stuff (iTunes, QuickTime, Adobe, Skype and a bunch of other obvious stuff).
question #1> there are still a LOT of HP applications that are running, what else can I safely disable? (I thought about disabling everything and then enabling what I need as I go along. I think there was a USB Driver app(??), some kind of monitor and scheduling app, a WAN app and a few others)

After that, I booted normally and ran a couple trusted, cleanup apps: Ad-Aware, SuperANTISpyware, and Microsoft Security Essentials. They did find several Threats and repaired them. I rebooted and haven't noticed the Blue Screens any more, but I still think the system is running slow and the Memory is running at 80+%.

I haven't run CCleaner yet.

Any other suggestions to improve performance? The system has 3gb of RAM (I didn't check the CPU yet).