Lol, I missed that part of you instructions. x'D
So I did that, but now it's giving me a new error:
"Error: The shadow copy provider had an unexpected error while trying to process the specified command."
It ...doesn't tell me anything else, just says,"Oh there's an error, kay thanks bye."
Hmm, we are really out of luck. You can do this:
Press Start > Right click on 'Computer' > Properties. On that page on the top left click on 'System Protection' > highlight C:\ and click on the 'Configure' button. It should tell you what is used where it says 0 (zero) on my picture.
So with 9.47GB you are nearly at your 10GB maximum. From there, your disk usage should be stable because the shadowstorage will be reused FiFo (first in/first out).
At your HDD size, I would leave it as is. At least you now know where all the disk space went.
These steps cover all bases when you Clean Up Factory Bloatware.
Most tech enthusiasts won't run the bloated Factory Preinstall but prefer to Clean Reinstall - Factory OEM Windows 7 for best performance.
you can delete restore points if you really wanted to, but I don't think you really need to do that, as 300 GB are a lot anyway.
Something you could definelty do is checking how much space the recycle bin is gobbling up (reserved recycle bin space isn't available for other stuff even if empty).
You won't need more than 1-5 GB of recycle bin, but it gobbles around 25 GB for a 500 GB drive like yours if you don't tell it not to. Here a tutorial.
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