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Showing posts with label Microsoft Windows. Show all posts
Showing posts with label Microsoft Windows. Show all posts

Monday, July 19, 2010

How to recover MOST of scratched CD data discs

a small compact disk / Memorex CD-RWImage via Wikipedia
I learn an old thecnique to how to recover damaged or scratched disks
with some lost of data. In this case i have one borrowed game - MAX PAYNE 2
with a chunck of 4 mb lost with a scratch in CD1 Install. Here we cover some
special thecniques of how to create a full working CD from the scratched one.
First some tools will be needed:
1. Alcohol 120%
2. UltraISO
3. Windows XP/2000 (not tested on 95/98/me)
3. Small piece of cotton
4. Dry cleaner paper
5. Finally, oil for cooking.
First step - preparing the CD
Get the cotton and drop some water, start cleaning vertically the surface of CD.
Do it 3 times and dry the water with a piece of dry cleaner paper. With a new piece
of cotton, drop some oil for cooking and start to wet the surface like you are
washing the CD with the oil. Dry carefully now. Some particles of oil will stay on the
microsurface of the scrath. It's okay. Seems the oil helps the laser of the CD/DVD driver
to read the surface again. Sure this will work with small unreadable scratchs - some hard
scratchs loose parts of the surface of the CD where we have data and it's lost forever.
But if it is loosed try anyway. Whith this tip 80% of the small scratched CD's coud be
recovered.
Second Step - testing the CD
With Alcohol 120% make an ISO - image making wizard - and lets see if the app can
read the loosed surface. In my case Alcohol 120% had recovered 60% of the data.
This is not enough. Have tryed other appz, they do not recover all the data. But the
CD/DVD driver laser CAN recover all data in this case. the data is still there, what we do?
third step - making the new CD
With the main copy system of windows explorer you can do it. Just create one folder
with the same name of the CD label for future burn reference, and copy the CD content
to the folder. When the CD copy process find the scratch, in majority of the cases, it's
slow down the reading and will recover ALL loosed data.If not, it just tell you there's
an unreadable sector. In this case your CD is lost. But it's not my case, finally
windows explorer got all the data from the scratch and made a copy in the folder.
with the ultraISO, wrote the original CD label, drop the content of the folder and
save as Iso. You can Test the new CD just mounting the iso in the Alcohol 120%. In my
case i did ISO of the two discs from MAX PAYNE 2 and tested installing from the mounted
ISO. Works like a charm. I got the 4 mb lost again. So, I have burned the CD and now i
have a working copy from the scratched one.
Sounds too bizzarre, but works. Course you can jump the cleaning process and try to copy
the content with Windows explorer. But in my case did not work without oil...
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Monday, February 2, 2009

Windows XP and Vista Product Key Recovery

Image representing Windows as depicted in Crun...
Image via CrunchBase
There are many programs available for extracting the product key from a Windows XP or Vista installation. The only problem is that they generally require the computer to be functional to run. These programs are useless if the operating system is corrupt and the computer will not boot into Windows. Fortunately, there are other options. This article explains how you can retrieve the product key with just the ntuser.dat file from the machine. You can also download a stand-alone version of my decrypter tool.
Windows Vista Users
I have been informed that this method also works on Windows Vista.
Translations
Background Information
While this may not sound very useful to the average user, if you work with computers on a daily basis you have most likely ran into this problem: You have to perform a fresh installation of Windows on a computer with a corrupt operating system, and the product key has been lost. This method makes it easy to find.
Instructions
The first step is getting the ntuser.dat file from the computer. In most cases the easiest method is to remove the hard drive, and connect it to a working machine.
ntuser.dat is generally located here:
C:\Documents and Settings\(User Name)\ntuser.dat
Where (User Name) is the primary account - Most often it is ‘Owner’ or ‘User’
Now that you have the file, you need to be able to view it. I recommend loadhive.exe (Download it here) from matcode.com.
Just run the program and select the file. It will show you a message with more information. It is important that you do not close this program until you are finished viewing the registry, as it temporarily loads the file, and unloads it again when you exit.
Now run regedit. Under HKEY_LOCAL_MACHINE you will notice a new sub-key called NTUSER. Starting with NTUSER go to Software > Microsoft > Windows NT > Current Version.
In the right window, double-click on DigitalProductID. This is the entry that contains the encoded product key.
We want the information in bytes 52 to 66. You can use the chart below for reference. We need the 15 sets of numbers where the 1’s are located.
0000  00 00 00 00 00 00 00 00  ..0008  00 00 00 00 00 00 00 00  ..
0010 00 00 00 00 00 00 00 00 ..0018 00 00 00 00 00 00 00 00 ..
0020 00 00 00 00 00 00 00 00 ..0028 00 00 00 00 00 00 00 00 ..
0030 00 00 00 00 11 11 11 11 ..0038 11 11 11 11 11 11 11 11 ..
0040 11 11 11 00 00 00 00 00 ..0048 00 00 00 00 00 00 00 00 ..
0050 00 00 00 00 00 00 00 00 ..
Now that you have the 15 byte encrypted code, you can type it into my decrypter tool:

Web-based version

Windows XP Key Decrypter Tool
Downloadable stand-alone version (exe)
Windows XP Key Decrypter Tool

Just click ‘Decrypt Code‘ and you will have your 25 digit Windows XP product key!
Troubleshooting
If you cannot find the DigitalProductId key in the file you loaded earlier, try the software hive located here:

\%SystemRoot%\System32\config\software

Load it the same way as before. Under regedit, it will generally create the new entries here: HKEY_LOCAL_MACHINE\SOFTWARE_00 (although the loadhive program will tell you where it puts it).

Final Notes
  • The decrypter tool ignores spaces and dashes, and is not case-sensitive.
  • If you cannot find ntuser.dat, make sure you can view hidden and system files.

  • If you are not sure which user account to select, I recommend searching for all ntuser.dat files on the drive, and using the largest one.

  • Do not attempt to open your own ntuser.dat file with Load Hive, because it is already in use, and you already have access to your own registry

  • If you cannot find the proper key with the data you need, try the alternate hive file, mentioned in the troubleshooting section above.Reblog this post [with Zemanta]

Thursday, November 13, 2008

Google Launches Video and Voice Chat for Gmail

Image representing Gmail as depicted in CrunchBaseImage via CrunchBaseGoogle today announced a major update for Gmail: video and voice chat. To make this work, users only have to install a small browser plugin. Google will start enabling these new features for all Gmail and Google Apps users at 12pm PST today. As is typical for new releases in Gmail, Google will roll this feature out to all users over the "next day or so."
The new chat functionality will work on PCs with Windows XP or Vista, as well as on Macs with OS X 10.4 or later. The plugin will work with all the major browsers, including Google's own Chrome, Firefox, Internet Explorer, and Safari.
From what we have seen so far, the videos integrate directly with the standard chat function in Google. To get started, you have to first enable this new functionality from the 'Options' menu at the bottom of a Gmail chat window. After that, all you have to do is select the contact you want to speak with and click on 'Video & more' in the lower-left part of the chat window. From there, you can then start a voice or video chat.
We have not been able to test the video and voice quality of these chats yet, but we will update this post once we get a chance to try it out for ourselves.
gmail_video_chat.png

Skype?

Interestingly, Google Talk, Google's desktop chat program does not have any video functionality yet, though Google enabled voice chat for Google Talk a long time ago. By adding voice and video chat, Google is clearly going up against Skype, which has made video chat one of its main features in the latest version of its software.
gmail_video_chat_2.png

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