DVD / CD Code 39 Error, Lost CD/DVD drive

If uninstalling and re-installing the driver don't fix the problem.  Try to delete the LowerFilters and / or UpperFilters registry values.

• Run "Regedit" and go to the following Registry Key
• go to the following HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\4D36E965-E325-11CE-BFC1-08002BE10318
• Delete all the LowerFilters and UpperFilters

DNS Cache

Your computer stores a list of IP addresses connected to various domain names. This list is generated as your browser requests DNS (Domain Name System) records from your ISP’s preferred DNS host.

Typing the following command in the Command Prompt that will save the result in a text file (dnshistory.txt) on C drive.

ipconfig /displaydns > c:\dnshistory.txt

Open the file on the C drive using Notepad (or any Text Editor). This file will contain a list of domain names accessed by the computer. Flushing the DNS now and then is also a great way to get over certain sites that may appear to be more sluggish than usual.

You can flush the DNS cache by typing the following command in the Command Prompt.

ipconfig /flushdns

Mac OS X Lion with NTFS read-write support

NTFS Volumes: Okay with big files an bug volumes. Works natively in all Windows systems. Works fluently in all Linux systems. Has native read-only support in Mac OS X. But has not write support under Mac OS X.

Download and install the following software:

• Download Tuxera macFUSE 2.2.1 image (64-bit).
• NTFS-3G (2010 version)

restart the computer
ignore the following warning:

more info...

Windows cannot connect to MacbookPro

It had been working but suddenly when I tried to connect by the IP address, a login screen came up.  Even though I entered the correct user name and password, I couldn't connect to the Mac computer.

Try either or both steps:

• Go to the Sharing on my MacbookPro, click "Options...", deselect the user account (and provide the password) then select the user account again (enter the password one more time).  
• Go to the Sharing on my MacbookPro, click "Options...",  disable the sharing (uncheck "Share files and folders using SMB", click "Done") and then enable it again.

Windows System State Analyzer

An Introduction to the Windows System State Analyzer

Download the following file and install only the component "System State Analyzer":

Server Logo Program Software Certification Tool x86: http://go.microsoft.com/fwlink/?LinkID=140110
Server Logo Program Software Certification Tool x64: http://go.microsoft.com/fwlink/?LinkID=140109