A few things others have mentioned but worth reiterating: Remove bloatware.
I know you're reticent to accidentally delete something you may need. These days, it's easy to hire a tech and have him go over each program on the computer and explain what it does and why you may or may not want it.
A few things I didn't read so far in this thread:
1) If you're running a traditional hard drive, it might help to run a regular defrag. This essentially tidies up the hard drive so you can access things faster.
2) If you're running Chrome - stop. It is quite possibly the MOST invasive browser out there. You can go into settings and disable many of the invasive things but it will most likely hurt the functionality of the browser.
I predominantly use Mozilla Firefox and do the regular updates. Firefox really should be your main browser.
3) Get a good antivirus. It will help significantly in keeping your system clean from garbage.
I know you're reticent to accidentally delete something you may need. These days, it's easy to hire a tech and have him go over each program on the computer and explain what it does and why you may or may not want it.
A few things I didn't read so far in this thread:
1) If you're running a traditional hard drive, it might help to run a regular defrag. This essentially tidies up the hard drive so you can access things faster.
You can look up how to do this.
If you're running SSD - which I strongly recommend - no need to defrag. You can look up how to do this. 2) If you're running Chrome - stop. It is quite possibly the MOST invasive browser out there. You can go into settings and disable many of the invasive things but it will most likely hurt the functionality of the browser.
I predominantly use Mozilla Firefox and do the regular updates. Firefox really should be your main browser.
3) Get a good antivirus. It will help significantly in keeping your system clean from garbage.