this is what im dealing with. i installed windows 7 beta 7227 build. i cant find a sound or graphics/video to work for this thing help. i need to install the correct drivers. i think its nVidia but im not for sure just plz help

Machine name: REEKVICIOUS-PC
Operating System: Windows 7 Ultimate 32-bit (6.1, Build 7227) Service Pack 1 (7227.winmain_sp.090602-2110)
Language: English (Regional Setting: English)
System Manufacturer: Dell Computer Corporation
System Model: Dimension 4550
BIOS: Default System BIOS
Processor: Intel(R) Pentium(R) 4 CPU 2.00GHz, ~2.0GHz
Memory: 512MB RAM
Available OS Memory: 512MB RAM
Page File: 411MB used, 1123MB available
Windows Dir: D:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7227.0000 32bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: This computer cannot play audio because the Windows Audio service is not enabled. Use the Sounds and Devices Properties control panel to enable audio. No sound card was found. If one is expected, you should install a sound driver provided by the hardware manufacturer.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name:
Manufacturer:
Chip type:
DAC type:
Device Key: Enum\
Display Memory: n/a
Dedicated Memory: n/a
Shared Memory: n/a
Current Mode: 800 x 600 (32 bit) (1Hz)
Driver Name:
Driver File Version: ()
Driver Version:
DDI Version: unknown
Driver Model: unknown
Driver Attributes: Final Retail
Driver Date/Size: , 0 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
Device Identifier: {D7B70EE0-4340-11CF-B063-BC3BAEC2CB35}
Vendor ID: 0x0000
Device ID: 0x0000
SubSys ID: 0x00000000
Revision ID: 0x0000
Driver Strong Name: Unknown
Rank Of Driver: Unknown
Video Accel:
Deinterlace Caps: n/a
D3D9 Overlay: n/a
DXVA-HD: n/a
DDraw Status: Not Available
D3D Status: Not Available
AGP Status: Not Available

-------------
Sound Devices
-------------
Description:
Default Sound Playback: No
Default Voice Playback: No
Hardware ID:
Manufacturer ID:
Product ID:
Type:
Driver Name:
Driver Version:
Driver Attributes:
WHQL Logo'd:
Date and Size:
Other Files:
Driver Provider:
HW Accel Level: Emulation Only
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

---------------------
Sound Capture Devices
---------------------
Description: Modem #0 Line Record
Default Sound Capture: No
Default Voice Capture: No
Driver Name:
Driver Version:
Driver Attributes:
Date and Size:
Cap Flags: 0x1
Format Flags: 0x0

Windows 7 Ultimate RC build 7100 is what you should be running. There are no service packs for pre-release OS's from Microsoft. Did you install Windows 7 on this Dell or did someone do it for you? Your installed memory is much too low for Vista, not to mention Windows 7. If your system won't run Vista properly, DO NOT install Windows 7 pre-release

Hi, I'm hoping to get some help here. I too I'm having the same issues as laroljackson. Tmagic650 suggestion regarding the version of Windows 7 doesn't seem to bring me any solution as I installed the RC 7100 from the very beginning yet my Laptop is showing no audio devices even though it worked perfectly fine when I had XP SP3 on it.

Could you help to resolve this as it has been driving me nuts for months. Further, I've actually forked out some £90 for the pre-order retail version of the OS which I'm due to receive this month. I'd like to be sure buying the OS is a smart move. Please find attached my DXDIAG log for your attention.

Thanks for your help.

Yes folud02,
mailpup is correct. I once installed Vista on a laptop with XP originally. No Vista drivers were available, but the only driver that didn't install was the sound driver. I had to use a USB audio device like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16812191020

Windows 7 or Vista, you may have to use something like this. As far the video, if you can't find a suitable driver, the laptop will have to stay with XP SP3... There is a Windows 7 compatibility test available from Microsoft. You should never assume that a new OS will run on older computers. I do expect Windows 7 will run well on more computers than Vista ever did