BlackViper's guides, and that's all they are - - guides, will tell you what you need to know about what processes your particular OS is generally running at startup, what it does and why it needs to run. Or not. The guides are tailored for each OS and are reflective of a clean install without anything else going on. Great info to start tweaking your PC for gaming. Now, any other softwares you're running may invoke processes in support of what they're trying to do in addition to the windows processes. Some of it needs to run, say if you want sound or video! But some of it is pretty much BS(like this telemetry crap) that's just draining away clock cycles and /or bits on the internet.
Anyone even thinking of doing any of this should do more than a little bit of research on every process you might want to kill. Make sure before you just kill it that you CAN safely do so without doing damage to your install. Don't EVER kill a process without knowing exactly what it is. If you're not sure - - Google is your friend. If you're still not clear - - leave it alone! Can't stress that enough.
I haven't used autoruns but it sounds like it does a lot of the same stuff you can accomplish in the control panel, just with an automatic interface. Even so, the same rules I stated above apply. If you don't know what it is leave it the heck alone. It'll save you a bucket of hassle!
Of course, you wouldn't have to do any of this stuff if you are just gonna surf or word process. But chopping away all that extra drag from your CPU and memory can help you wring some extra performance out of your rig for gaming.
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