I changed to Windows Vista Ultimate and it does not run

A solution to that is to install Windows Vista Ultimate on top of your old vista installation. Just insert your Vista DVD and restart your computer. And simply follow the instructions for the installation.

Yes. Vista Home Edition has less features than Ultimate. Also, it will not run on a different code- nor will Microsoft provide you with one if you have the other

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Try a system restore and install your updates individually to see which one has caused the issue.
Make sure you have all your virus and spyware software up to date as well.

You'll need to have at least the following specs to run vista comfortable; 1 or 2 Ghz processor 1 or 2 GB RAM Video : AGP with 256mb or more cache Yoy might also have to consider changing your power supply.

Hi dear, i have used dell optiplex GX520. when i used with winXP i can hear sound. but when i used win7 ultimate i can't hear sound.it show " the Audio service is not running ". but i turn on it all and it don't work too. please help me

The minimum recommended ram for Vista is 1 GB, generally accepted practical minimum is 2 GB. A 1 GB system will be kinda laggy. Maximum RAM for 32 bit Vista is 4 GB.

Vista Home Premium is roughly equivalent to Windows XP Media Center Edition (Has Media Center, cann't be put on a DOMAIN type network)

Vista Business is roughly equivalent to Windows XP Professional (Can Join a Domain, Doesn't have Media Center)

Vista Ultimate has all available freatures of Vista, you can do any windows function with Ultimate

your audio driver is not helpful for sound card which is you install on your pc.
plaese change this driver.
all windows have different driver for different devices.
so you install the driver compatible with window vista and sound card.

checklist:
1. sound driver 2. microphone settings in volume control applet 3. tap test (tap the area around the microphone and see if eg Sound Recorder picks it up) 4. external microphone
If you get to step 4 before you get anything then your problem is one of missing or damaged microphone.

Reinstall the nero 8 and restart the system. If problem persists then it is better to change the OS to windows XP SP2.

Have you tried running the software in XP emulation mode? have you installed it with administrative privileges? has UAC been turned off.. Perhaps ya may even need to up-date to a later version?