|Well, the files you mentioned are to allow "go back" if this should be required - config.msi being for MS Office.|
However, I hate to spoil your fun but we get stacks of folk on here that delete files/folders and hope we can get their system running again. They make no difference whatsoever to speed and if you are stuffed for HD space there are more beneficial procedures - such as reducing the number of restore points.
If you really must pick off files/folders try renaming them first for a while, such as adding an X to the end of the file name. They will then be disabled and you have a fighting chance of getting them back if something backfires - provided you can still boot. File names can often be found in Google if you want to confirm their function. Best advice tho is to leave system files well alone, or any others you are unsure about.
Just a little tip - msconfig is really meant for diagnostics (but sure, we all knock some things out there). Wherever possible though, check in the programs control panel or configurations to see if there is a provided facility to stop programs starting up with Windows. One problem I have run into at odd times when using msconfig, is that you end up with the same entry duplicated (one ticked, one unticked). You then have to resort to the registry to sort it out.
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