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Restore deleted registry files/keys (didn't make a backup!)

14 replies
Found 16th Dec 2014
Hi all, I've been a bit overzealous and deleted some registry keys with CCleaner. I know people say it's safe and I've used it before without problems, but as soon as I used it the machine became painfully slow at startup (Vista...groan).

Is there a registry fixer or will restoring a registry backup from the system32 folder help?

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14 Comments

Cant you roll back the machine to a previous date?

Original Poster

stuarthanley

Cant you roll back the machine to a previous date?



I did that, still a bit sluggish but I'm hoping that's just because of installing a new AV and having a bit of a cleanup. The weird thing is that the programs I installed before the rollback were then present afterwards.

A new AV is going to be likely to overzealously spend all cpu time scanning your whole drive. Without a SSD that's going to be painfully slow and even with one and a sub par cpu it's going to slow too. Check task manager for cpu and hdd usage stats.

Original Poster

Hansi

A new AV is going to be likely to overzealously spend all cpu time … A new AV is going to be likely to overzealously spend all cpu time scanning your whole drive. Without a SSD that's going to be painfully slow and even with one and a sub par cpu it's going to slow too. Check task manager for cpu and hdd usage stats.



I installed Avast, the machine was running fine before that, I even managed to do a scan with Avast, MWBytes and SAS in good time but the stuff I did to it is no more than I've done before. I'm hoping it might just be the initial install and scans that have caused the problem but the last thing I did before all the others was a registry clean with CClean.

There is rarely ANY reason to delete entries from the registry.

Extra unwanted entries in the registry don't slow the computer down and so it does not hurt to leave them there.

The registry is possibly one of the most important files in Windows so it is not a good idea to change entries manually.

Original Poster

guilbert53

There is rarely ANY reason to delete entries from the registry.Extra … There is rarely ANY reason to delete entries from the registry.Extra unwanted entries in the registry don't slow the computer down and so it does not hurt to leave them there.The registry is possibly one of the most important files in Windows so it is not a good idea to change entries manually.



Thank you, I know this now. That is not the answer I was hoping for though, do you know how I can recover the deleted registries? I'm tempted to just upgrade to Win 7 and hope that sorts it out.

I've used CCleaner for years and never had an issue.
I also use Avast. Take a look in the settings for scheduled system scanning. IIRC it defaults to every day (which would slow PC down while scanning). I changed mine to weekly. Avast doesn't slow my PC down noticably at all.

Original Poster

markystarky

I've used CCleaner for years and never had an issue.I also use Avast. … I've used CCleaner for years and never had an issue.I also use Avast. Take a look in the settings for scheduled system scanning. IIRC it defaults to every day (which would slow PC down while scanning). I changed mine to weekly. Avast doesn't slow my PC down noticably at all.



Thanks, it did seem to get a bit quicker after a few restarts but I've never been confident with Vista being a great O/S and any minor changes seem to have a huge effect.

H

Steve Mac

Thanks, it did seem to get a bit quicker after a few restarts but I've … Thanks, it did seem to get a bit quicker after a few restarts but I've never been confident with Vista being a great O/S and any minor changes seem to have a huge effect.



Have to agree with you about Vista, 7 is much better (now on 8 which is super fast, I just dumped metro and got classic shell lol).

Original Poster

markystarky

HHave to agree with you about Vista, 7 is much better (now on 8 which is … HHave to agree with you about Vista, 7 is much better (now on 8 which is super fast, I just dumped metro and got classic shell lol).



my friend installed 8.1 on his laptop recently when he put a new SSD in. It's a core i7 with 8gb of ram and I kid you not it booted from cold to full desktop in about 6 seconds.

CCleaner in the many years I've used all it's tools has never caused an issue. I have also used Wise Registry Cleaner and Wise Disk Cleaner for many years, again without issues, as they dig deeper than CCleaner (both CCleaner and Wise miss what the other picks up) - these are run at least monthly sometimes fortnightly.

The issues you have would most likely be from using Vista and if you was local I'd gladly fix that issue by whatever means necessary and I'm sure your pc/laptop would function a lot better. Further upgrades include changing the HD to SSD but that would incur a financial outlay.

You state the pc/laptop is running very slow on boot at this time, What exe/process is using all resources at startup? (Check taskmanager for high process users). Did you defrag?

I'm not sure there is anyway to get delete registry entries back but as others have said I'm not sure this is the cause of the slowness.

Depends on how confident you're feeling but you can take a look in msconfig which will enable you to change some system settings such as which applications/service load with Windows, just be careful!

Original Poster

miacid

I'm not sure there is anyway to get delete registry entries back but as … I'm not sure there is anyway to get delete registry entries back but as others have said I'm not sure this is the cause of the slowness.Depends on how confident you're feeling but you can take a look in msconfig which will enable you to change some system settings such as which applications/service load with Windows, just be careful!



Did the standard msconfig tweaks, I'm fairly savvy but from the looks of things I'm gonna have to just put this down to Vista.
philphil61

CCleaner in the many years I've used all it's tools has never caused an … CCleaner in the many years I've used all it's tools has never caused an issue. I have also used Wise Registry Cleaner and Wise Disk Cleaner for many years, again without issues, as they dig deeper than CCleaner (both CCleaner and Wise miss what the other picks up) - these are run at least monthly sometimes fortnightly.The issues you have would most likely be from using Vista and if you was local I'd gladly fix that issue by whatever means necessary and I'm sure your pc/laptop would function a lot better. Further upgrades include changing the HD to SSD but that would incur a financial outlay.You state the pc/laptop is running very slow on boot at this time, What exe/process is using all resources at startup? (Check taskmanager for high process users). Did you defrag?



Thanks Phil, I'm pretty good on on stuff like this (despite the question and results). It's my father in law's machine, an older acer that has always run well but last night it started to play up a bit after I made some subtle changes. I've used ccleaner in the past with no problems but I've noticed that on 2 vista machines it has had an effect after a registry clean. I'm going to upgrade my personal PC from Vista to 7 later and if that gives a performance boost I may do the same for my FIL's.

I dont believe deleting orphan registry files will make the machine slow . I have used Ccleaner and Wise registry cleaner prior to that for years and have never had a problem. If you install programs ,then unistall them ,there is normally registry files left ...............orphan registry files . These files can happily be deleted using the mentioned programs and should not cause any problems . I have never needed to import registry files and I never back them up either .
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