Latitude 640 i want to audio software who is give me hd quality sound in my laptop for window 7

were you seen hd audio bus is your sound drivers ( realtek drivers.)
Download Realtek HD Audio Drivers for Windows Download Realtek HD Audio Drivers free latest version

How about giving a Free DVD/Blu-ray Player a try?

Leawo Free DVD/Blu-ray Player is all-inclusive media player software to play back Blu-ray/DVD disc, common videos and up to 1080P HD videos smoothly on Windows 8. As professional Blu-ray/DVD media player software, Leawo Blu-ray Player could play back the newest Blu-ray and DVD discs released in the market on Windows 8.1/8/7/Vista/XP. It could play back common videos, up to 1080P videos and audios in almost all formats with lossless quality. With various advanced audio decoding technologies like Dolby, DTS, AAC, TrueHD, DTS-HD, etc. built in, Leawo Blu-ray Player delivers extraordinary audio effect.

Hope it is another choice for users. :) Best Free Blu ray Player Software for Windows Leawo Free Blu ray Player

High quality video playing requires a lot of graphics memory. From the computer specs that I read on Dell's site, you have up to 128 MB graphic memory. Not much. I am surprised that you even installed Windows 7 when your total memory is 1 GB. Try to live within the means (hardware capabilities) of your computer.

You may need to install WinDVD , Interactual Video player, or some similar video player software. The drive will read data CD's and DVD's with Windows , but it needs video codecs (supplied with the video player software) to play DVD movies and media.

Maybe it's an driver installation order problem, the system needs the audio drivers installed prior to the modem since I believe they are both on the High Definition Bus. Here is Dell's official install order for the D620 with integrated Intel graphics...


1. Install the Dell Notebook System Software on a Dell Portable system from the Drivers, Utilities and Applications CD.
2. Install the Intel® Mobile Chipset Driver.
3. Install the SigmaTel STAC92xx Audio Driver.
4. Install the Alps GlidePoint/StickPointer Driver on Your Dell Portable System
5. Install the Conexant D110 MDC 1.5 v.92 modem driver.
6. Install the Intel® 945GM/945PM video driver in Microsft® Windows® operating systems.
7. Install the Broadcom 57xx Gigabit Integrated Controller Driver
8. Install the Dell™ Wireless 350 Bluetooth® driver in Microsoft® Windows® operating systems.
9. Install the wireless network adapter in a Latitude D-series portable computer.
10. Install the O2Micro OZ601 Cardbus Controller in Microsoft® Windows® operating systems.

Dell Latitude D620
Bios A02
Core Duo T2600 @ 2.16ghz
2048 MB DDR2 667mhz
NVidia Quadro NVS 110M TurboCache
100gb 5400rpm HD
Philips SDVD8820 DVD+/-RW Combo
SigmaTel C-Major HD Audio
Broadcom NetXtreme 57xx Gigabit
Intel Pro/Wireless 3945ABG 802.11a/b/g
TrueMobile 350 Bluetooth
Windows XP SP2

Hi.

I see this from time to time.
Here is where I would go to get the proper audio drivers.

Realtek . com

They have both ac'97 type audio drivers, as well as hd audio drivers.

Select the type of software that you want for your system, and operating system as well.

The software has different downloads for the different operating systems, so the one for xp won't work at all for windows 7, and vice versa.

Install the one you want, then reboot.
If done properly, this will fix your audio problem completely.

Windows will now recognize your audio device and install the correct drivers and software for it.

I hope this helps you out, good luck, and, as always, feel free to give me a top rating !!

Thanks

Did you make the audio changes in the Windows Control panel documented in the Ez Vinyl 4.1 Setup Instructions? You must set audio format and levels to specified levels for Windows 7.

check sound card

what u should do is
turn off your system
press and hold Fn key,power on the system, leave Fn key
computer will perform a diag
after those diags you will get 4 options you have to choose symptom TREE
you will get options look for any option which says sound or audio
if you hear sounds at that time you need to reinstall the drivers as it states that sound card is working fine
or else
provide me your system's service tag located at the bottom pannel of your system, turn it upside down you will find a bar coded sticker which has a 7 digit alphanumeric number
it will be much more easier for me to provide u a resolution

i installed windows xp service pack 3 in dell c640 latitude laptop after which the multimedia audio controller driver is not installed.