@Caturra75 It's still worth testing with Avast disabled, even if you want to keep it installed. Whether it helps or not is useful information.
Chrome is a known memory hog, but you should still be able to play with it open: Windows is normally better about managing RAM use when resources are low. I'd still like to know what apps are listed in the Task Manager's Startup tab, in part because I'd like to know what else runs when you're not in a clean boot. The memory use reported in hwinfo is much higher than I'd expect before you started playing—for me, Windows sits at about 2 GB RAM right after rebooting, although I'm one build behind you.
It's possible that addressing the issue of extra RAM use on startup would help, but again, that depends on which apps are enabled at startup and what they're doing. So please specifically screenshot the Task Manager's Startup tab, not the main one but the one that says Arranque at the top.
By the way, your laptop is good, it just maybe needs more memory. (Maybe.) And that's an easy upgrade, and cheap too. But it might not be necessary, depending on whether you can get RAM use under control.