Studio XPS 7100, suddenly slow

no OS stated, w10? 32bit, (AMD RS785 + SB710),  can run 32bit if stepping newest) AMD older is no good.

is this HDD or SSD based boot PC? , best is SSD< first. and fresh w10.

what is slow PC do 10,000 things, please name 2 things

one thing,  that is not slow, can you name one thing here (like clicking on control panel.

then one thing that is slowest (not the internet) just the PC only,  like office apps slow, or even notpad

or a game slow only (name the game please)

then if only the internet is slow , say that. (and if only one web site, then tell that place) URL

10,000 things to do, some slow or 1 or all?

keep in mind all HDD go slow and slower as they age, then die. (when smart first starts failing slow happens)

run he ePSA tests?

if you booted to a linux USB demo stick is it slow<>  hummmmmmmmmmmm

the PC is 9 years old , the RTC coin cell is now EOL end of life,  when it goes dead so be the PC, so that is first

proactive stance.

slow PCs are:
1: HDD BAD (not dead just bad and slow as all do near death)

2: HDD corrupted (aka, OS corruption)

3: ram stick fell out and have only 1GB of ram

4: CPU overheated (run CPUz)

5: GPU overheated if card present, can't see your PC insides, here.

and more Im sure. (PC are simple until the break)