disable OGA or KB949810 notifications

RUN or from a CMD prompt

MsiExec.exe /X{B2544A03-10D0-4E5E-BA69-0362FFC20D18}

this will force it to uninstall it self (KB949810)

Unable to add data connection. Key not valid for use in specified state. - MSDN Forums

solution:

1. Open the registry

2. Rename [HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\8.0]

To [HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\8.0back]

3. Restart Visual Studio

Windows Media Player 8,9,10 CD to MP3:

HKLM\SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding
SetValue "HighRate"=dword:0001F400 (128000)
HKLM\SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding
SetValue "MediumHighRate"=dword:0001B580 (112000)
HKLM\SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding
SetValue "MediumRate"=dword:0000FA00 (64000)
HKLM\SOFTWARE\Microsoft\MediaPlayer\Settings\MP3Encoding
SetValue "LowRate"=dword:0000DAC0 (56000)

WinXP Home to XP Pro Lite - ?????

HKEY_LOCAL_MACHINE\Homekey\ControlSet001\Services\setupdd
key Standard format REG_BINARY all 0
01 --> 00
02 --> 00

or:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\ProductOptions
set to empty, than reboot to last known good config..

or use NTSwitch.

SYSTEM: DMA

Delete these four properties to force XP to reevaluate IDE
devices DMA capabilities on next boot.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0001]
"MasterIdDataCheckSum"=dword:0
"SlaveIdDataCheckSum"=dword:0

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0002]
"MasterIdDataCheckSum"=dword:0
"SlaveIdDataCheckSum"=dword:0