Question Mid Range PC slow after reinstalling Windows 10 ?

[AdamKicks]

Hi Guys!

I brought everything new from store. From the first time I powered up my pc, it's always slow. It takes a lot of time to boot and when Windows finally starts up, I have to wait for minutes before I can click on something because it freezes. If I want to open something like Google or a game, I have to wait more time than expected from a mid-range computer. I tried to reinstall Windows 10 several times, but the performance is always poor.

My specs:
Motherboard: Asus Rog Strix B450-F Gaming
CPU: AMD Ryzen 5 3600
GPU: Asus Geforce Gtx 1660ti 6GB
RAM: Team Group T-FORCE Delta Force TUF DDR4 3200Mhz 16Gb
SSD: Apacer AS340 240Gb
HDD: Toshiba HDWD130 3Tb
OS:Windows 10 Pro

Some weird things:

• I have 3200Mzh RAM but it's only running at 2400Mhz ?
• Despite that there's no program opened, the task manager says that the CPU usage is 80% or above, but looking at the processes table I can't sum up all the 80% usage ?

I think I am into computer things, so you can treat me this way.

That's all, I would be very grateful if you can guys help me.

 

[rgd1101]

where did you install windows to? the ssd or the hdd?
how full is the ssd? 240gb is bare min

latest motherboard bios?
turn on xmp/docp memory profile in bios

 

[AdamKicks]

I have installed windows on ssd, and I don't use ssd to other purposes, so I have space on it.

I have UEFI bios version: 4007, 2020.12.08, the latest is 5003, so it's not the latest

I will try turning on xmp/docp

 

[rickypicky5]

Have you downloaded and installed the drivers from here?

 

[rgd1101]

what is on the hdd? system might be slow if it is accessing the hdd.

 

[scout_03]

use glary utilities and post a picture of all software that load a start up with windows .