'Take your computer'...?... & 'chocolatey' recommendation form Rags P. -... hmm too complex and won't work for stuff embedded in the actual programme like Avast's stuff in CCleaner. Just get CCleaner version 5.40 (still available on softpedia and file hippo etc - or get CCleaner PORTABLE from there and download it direct to a USB stick and run it from USB stick. Tidying your registry will make no difference to your computer unless the registry is completely corrupted - but then you need more than a freeware cleaner). I personally would recommend getting 'Malwarebytes Adwcleaner' (free), and 'PCDecrapifier 3. 0. 1' - small freeware programmes that don't install anything and just help you clean crp of the computer.

CCleaner is ok upto version 5.40. After that infested with Avast advertising malware. Just get CCleaner version 5.40 (still available on softpedia and file hippo etc - or get CCleaner PORTABLE from there and download it direct to a USB stick and run it from USB stick. Tidying your registry will make no difference to your computer unless the registry is completely corrupted - but then you need more than a freeware cleaner)... I personally would recommend getting 'Malwarebytes Adwcleaner' (free), and 'PCDecrapifier 3. 0. 1' - small freeware programmes that don't install anything and just help you clean crp of the computer... The main thing to keep computer speed is to uninstall not needed programmes and Apps and block bs stuff from Startup - big startup slow downs can be Dropbox, OneDrive, - UNinstall them unless you use them. Can get them free later if needed... and if you have Dell or HP - half of their Apps are unnecessary (like...'support assist' - Uninstall imho)... CCleaner is not a virus protector - but is now owned by Avast - but i really would avoid Avast - their marketing is too aggressive with adware embedded in their programmes imho.- just look in wikipedia for CCleaner... Virus protector - plenty of good options without using resource drainers like Avast, McAfee, Norton... I personally use Kaspersky Free or Bitdefender Free, or paid versions if heavy surfing / downloading.

CCleaner is ok upto version 5.40. After that infested with Avast advertising. Just get CCleaner version 5.40 (still available on softpedia and file hippo etc - or get CCleaner PORTABLE from there and download it direct to a USB stick and run it from USB stick)... of you select the wrong options in CCleaner you might delete something you wanted to keep. It can't 'damage' the computer but you can delte software files that cause the computer to behave wrong. ALWAYS create restore point before doing anything significant to system etc... Tidying your registry will make no difference to your computer unless the registry is completely corrupted - but then you need more than a freeware cleaner... I personally would recommend getting 'Malwarebytes Adwcleaner' (free), and 'PCDecrapifier 3. 0. 1' - small freeware programmes that don't install anything and just help you clean crp of the computer... If you don't know what you are doing - do not mess with stuff suggested by PCDecrapifier... In windows - also just use... Windows Administrative Tools - Disk Cleanup... The main thing to keep computer speed is to uninstall not needed programmes and Apps and block bs stuff from Startup - big startup slow downs can be Dropbox, OneDrive, - UNinstall them unless you use them. Can get them free later if needed... CREATE RESTORE point before messing with the system and uninstalling stuff - can then recover by going back in time using 'System Restore' if need to... and if you have Dell or HP - a least half of their Apps are unnecessary (like...'support assist' - Uninstall imho).

No. But I assume you have a proper anti-virus also (eg. Bitdefender Free, Kaspersky Free, Bullguard free trial, etc... or paid versions if heavy surfing/downloading - I avoid Avast products like Avast, AVG (used to be great), Avira... too much blah and advertising, and also find McAfee and Norton slow down the computer and browsing too much... MSE on win 7 is a security programme meant to run in background. CCleaner is a cleaning tool, not a security or anti-virus tool. Malwarebytes Adwcleaner - is not an anti-virus programme - it is designed to identify adware / malware. I would just run occasionally manually (once a month or so) - I don't like stuff set to auto-run cleanups (including CCleaner not) NOTE... CCleaner is ok upto version 5.40. After that infested with Avast advertising. Just get CCleaner version 5.40 (still available on softpedia and file hippo etc - or get CCleaner PORTABLE from there and download it direct to a USB stick and run it from USB stick)... if you select the wrong options in CCleaner you might delete something you wanted to keep. It can't 'damage' the computer but you can delete software files that cause the computer to behave wrong. ALWAYS create restore point before doing anything significant to system etc... Tidying your registry will make no difference to your computer unless the registry is completely corrupted - but then you need more than a freeware cleaner... I personally like 'Malwarebytes Adwcleaner' (free), and 'PCDecrapifier 3. 0. 1' - small freeware programmes that don't install anything and just help you clean crp of the computer... If you don't know what you are doing - do not mess with stuff suggested by PCDecrapifier... In windows - also just use... Windows Administrative Tools - Disk Cleanup... The main thing to keep computer speed is to uninstall not needed programmes and Apps and block bs stuff from Startup - big startup slow downs can be Dropbox, OneDrive, - UNinstall them unless you use them. Can get them free later if needed... CREATE RESTORE point before messing with the system and uninstalling stuff - can then recover by going back in time using 'System Restore' if need to... and if you have Dell or HP - a least half of their Apps are unnecessary (like...'support assist' - Uninstall imho).

Que? Clearly if you tick the box for delete 'Saved Passwords' it deletes those that your browser has saved. Same as 'Saved form information' etc. etc... ie. Where you put a tick in the box - it means it will remove it... Personally I NEVER save my passwords in the browser anyway.

Late answers. But here you gp - Tidying registry will have no effect on you PC speed unless it is completely corrupted - but you would know that as PC would not be working... Registry is just a simple text list really, so does not use much space. Way back when PC's were really slow (1990's) a registry tidy helped a bit... If you want to delete them all off - just Create a System Restore point... if you don't know what that is ggl it, and don't mess with registry if don't know what it is telling you in the CCleaner list... Duplicates - depends how much space they are taking - If they are your own personal files that you have managed to save and copy double etc - just keep your own personal file / directory tidy with file explorer not ccleaner - this is no different to keeping a physical cupboard or filing cabinet tidy... If the duplicates look like strange system type names, leave them alone unless you know what you are doing... I NEVER use deletion of duplicate files from a software like Cleaner - too easy to delete something you didn't understand or didn't want to delete... look under C:\Users\<username>\Downloads... you may well have downloaded stuff several times by clicking in internet. Sort that out by deleting what you don't need. Download directory is for downloads, not for permanently storing stuff.

Since Avast took over CCleaner in 2017, all versions after 5.40 are automatic run and infested with Avast advertising it appears (eg. Check out wikipedia for CCleaner). I still use CCleaner 5.40 (but set to manually run occasionally - why have it running it bachkground using resources?). Or get CCleaner PORTABLE from reputable software sites like softpedia or file hippo etc etc.

Various things like Internet Explorer, Chrome etc create a set of small dummy files - so even when you deleted them they are very quickly back again. They don't matter. Just look at 'details' and it's only really big files and big volumes of data that will help (if at all)... CCleaner is ok upto version 5.40. After that infested with Avast advertising. Just get CCleaner version 5.40 (still available on softpedia and file hippo etc - or get CCleaner PORTABLE from there and download it direct to a USB stick and run it from USB stick)... Tidying your registry will make no difference to your computer unless the registry is completely corrupted - but then you need more than a freeware cleaner... I personally would recommend getting 'Malwarebytes Adwcleaner' (free), and 'PCDecrapifier 3. 0. 1' - small freeware programmes that don't install anything and just help you clean crp of the computer... If you don't know what you are doing - do not mess with stuff suggested by PCDecrapifier... In windows - also just use... Windows Administrative Tools - Disk Cleanup... The main thing to keep computer speed is to uninstall not needed programmes and Apps and block bs stuff from Startup - big startup slow downs can be Dropbox, OneDrive, - UNinstall them unless you use them. Can get them free later if needed... CREATE RESTORE point before messing with the system and uninstalling stuff - can then recover by going back in time using 'System Restore' if need to... and if you have Dell or HP - a least half of their Apps are unnecessary (like...'support assist' - Uninstall imho).

OMG. Fallen for the " my name is bob from 'company x', you have a problem with your computer / internet etc " scam... 1. NEVER give control of your PC over to an unknown person / caller. - lucky if all they got was a payment from you and not credit card details to potentially take more etc etc. Next time get a reputable local PC freelance helper (with recommendation from someone if possible - plenty of scammers in that branch too)... 2. He was correct that different anti-virus programmes will clash. You have microsoft defender in background (or microsoft security essentials MSE on windows 7). Especially Norton and McAfee are heavy programmes that will slow down a slow PC. AVG was ok until Avast took over and now it's infested with advertising for Avast it seems. Personally - Bitdefender Free, or Kaspersky Free rather than AVG... 3. That's a lot of cash for a free programme and some of the 'helper' s time... You did not explain why you even were talking to them... sounds like a cold caller to me... Better places to ask for help are like... 'reddit' /r/windows - real people will generally give answers in there; or under microsoft web pages help forums etc