Help Using Windirstat please

Hello in urgency to delete extra files from my laptop because the hard drive is really small 60GB and has only 3GB left.
My friend John recommended the use of this great software which helped me to identify what is taking so much space in my hard drive, but now I don't know how to use it and how to delete. Actually I don't know what to delete due to the fact that as you can see from the pics the "windows files" are 19.8GB but I also know that if I delete the wrong files I will kill the Computer.

I am using Vista the total size of the Hard Dive is 68GB and I only have 1.71GB free :( it will crash soon!!

How can I proceed ? Who can help me and tell me what folder I can comfortably delete please according to these pictures ?

Thank you
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Seth SimmonsSr. Systems AdministratorCommented:
you could try deleting your restore points (control panel -> system -> advanced system settings -> system protection tab)
from treesize looks like it's using 14.1gb
Paul MacDonaldDirector, Information SystemsCommented:
I can't tell you what to delete from your computer.  What I can tell you is what I would do in the same situation:

1) Delete files and folders ending in .tmp
2) Delete the contents of folders called Temp
3) Uninstall any programs (and their data) that I no longer needed
4) Delete any documents / spreadsheets / photos / videos I no longer needed

This is generally a safe process, but I make no guarantees about your experience.  Your mileage may vary.  Use at your own risk.  Consult your physician.  Mind the gap.
Paul MacDonaldDirector, Information SystemsCommented:
As an unhelpful aside, hard drives are stupid cheap now, and you can get Geek Squad (or someone like that) to move your data to a new drive pretty reasonably.  The stress reduction is well worth the cost.
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noxchoGlobal Support CoordinatorCommented:
As noted by Seth, delete the system restore points. The system volume information space used is taken by restore points. In other words these are backups.
ItaliabellaAuthor Commented:
Seth & Noxcho Thank you !! We are on the same page. This is what I was looking for a confirmation. I thought that the restore points or backup was the only possible thing that was killing my hard drive, but I was unable to see it.

Now how can you tell for sure that those 14.1GB are Restore Points/backups ? What is the clue that I don't understand ?
Where is the line or extencion that make me see that those are backups and can securely be deleted. I want to delete them and my problem will be solved but I also would like learn how to read this awesome software....Thank you.

How do you guys know that 14.1GB System Volume Information are the Restored Point or Backups ?
Paul MacDonaldDirector, Information SystemsCommented:
ItaliabellaAuthor Commented:
ok, I Unistalled a few programs and now I am down to 10.8GB System Volume Information.

I expanded it and took a new picture so you can see exactly what I see and tell me exactly what lines I can safety delete.
ItaliabellaAuthor Commented:
Thank you Paul I followed steps 1 thru 4 but not much has changed I really need to delete the backup to solve this issue. This action will give me at least 10GB free of space.
noxchoGlobal Support CoordinatorCommented:
Usually there are only System Restore Points taking space in System Volume Information folder, it is a protected folder which does not give access for data writing for every program.
And restore points are saved under guid names which you see exactly on your newest picture.
Go ahead and delete all restore points via system properties and see if you regain the space.
ItaliabellaAuthor Commented:
Noxcho I tried to delete that folder from ThreeSeze but I can't. I right clicked that folder the option delete appear but it really doesn't delete anything.

I can go directly into Windows folder and try to delete them form there. After unhide the folder and extension I see  this folder which say Backup ..I think this is what we are looking for :) I am attaching 2 more pictures so that you can verify that this is they right folder to delete please.

thank you
NVITEnd-user supportCommented:
Also, if you don't use hibernation, that could save a few GBs. To turn off via command line:
powercfg.exe /hibernate off

Open in new window

noxchoGlobal Support CoordinatorCommented:
Wait, i nev er told you to try deleting them via TreeSize or Windows Explorer. Read my comment again, you need to delete them via System Properties.
Here is a nice tutorial with screen shots which shows how to remove these restore points:

Here more guides:

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ItaliabellaAuthor Commented:
Ok finally I was able to frees up almost 10gb which is a lot in this old laptop. Thank you everyone for your time and patience.
ItaliabellaAuthor Commented:
Thank you everyone. I still have one more issue with this laptop but I will a new case now. Basically It doesn't take service pack 2. after  I think I installed there is an error saying : service pack did not install. Reverting changes. do not turn off your pc.
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