Help cleaning my system

My computer is in a really bad spot right now. For months it has been incredibly slow, and I didn't know why. I did the junk file cleanup on Ccleaner often and I thought that was enough. I tried refreshing my PC and that was recent, but it still loads things EXTREMELY slowly for being a Seagate 1 TB 7200 RPM HDD. I went into Ccleaner and decided to try out some of the different tools. I did a disk analyzer to show me what was taking up so much space, and the image attached showed what it showed me. Almost 600 GB of JUNK files. I realize all 600 GB might not all be junk files, but a large chunk would be. I went in and deleted all of my duplicate files, but that only helped a little bit. Anyone have any ideas? Help would be GREATLY appreciated.

your image didn't attach @Atticbase.

also, you didn't blindly follow what the duplicate file finder showed and deleted everything suggested?

I assume you are using the latest winapp2.ini and CCleaner versions? Also - you can delete the %windir%\prefetch\*.pf files, reboot 3 times, then rn the following command to defrag the drive.

C:\Windows\System32\rundll32.exe advapi32.dll,ProcessIdleTasks

which will aso need to be run as administrator. Or use a 3rd parth defragger.... Private message me for suggestions if you wish.

Hi Atticbase, and welcome to Piriform.

A computer can run slow for a number of reasons.

The first place I would start is with a scan for malware. Malware can cause serious running issues and can sit there with a user completely unaware of it's presence.

What antivirus software do you run, and are you running more than one "active" A/V at the same time?

CSG above mentions using a defrag program. Do you defrag your drive at all? And how much free space do you have on that drive? Usually as a guide you need at least 12% free space to carry out a defrag. That's the next thing I would do if it isn't already part of your maintenance program.

Sometimes folk have a myriad of programs running at startup which they don't know about and are completely unnecessary. Many can start services and processes running, which run continually in the background sucking up resources.

Have a look in CCleaners "Tools/Startup" section and see what's under the "Windows" and "Scheduled Tasks" tabs. Are there any third party or non windows programs running at startup which you don't need running continuously?

You could post screenshots if you like and we may be able to point out any obvious stuff you don't really need to be sucking up resources.

You don't say what type of computer you have. Desktop or Laptop?

Either one could be running slow if it's running hot. If a desktop, how long since you got inside the case and cleaned out the build up of dust and grime?

The list goes on but just a few things to think about. Hope it helps.

:)