Mbox2 mini - terrible noise problem on Win7 Cubase5 after upgrading to PT8.0.4

[islovernew]

After upgrading to Windows7 Ultimate, I updated the ASIO driver for my Mbox2 mini with the PT 7.0.4 upgrade issued a few months ago. I don't actually use PT and never have - I specifically bought my MBox to be used with third-party audio software such as Cubase etc. But since Avid didn't offer any standalone Audio driver upgrade for Win7, I went through the whole proccess of upgrading PT as explained (I'm very sure that I followed all the instructions carefully, including deleting prefs, dbs, and disabling USB power management).
But nevertheless, I still have the exact same problem that I had with the old driver, prior to 7.0.4, from the moment I upgraded to Win7 64bit: When I monitor a track before recording or when I play it seperately in the Track Editor in Cubase 5, it sounds just fine, but the moment anything playbacks normally through the mixer, the sound comes out crackling and very very noisy, thus rendering the whole process of recording music impossible. The noise actually reduces slightly as I choose a higher buffer, but it's still completely unusable throughout the scale of different buffer sizes.
I'm quite sure that it's a driver issue and not a hardware issue, because the Mbox also works and sound fine when I use it to playback directly from Windows Media Player etc.
What should I do? I read posts here from several other people who had the same problem, and tried everything that was offered to them. Nothing helped. Can it be that the new 8.0.4 audio driver still suffers from some crucial bug? I'm very close to giving up on my Mbox altogether, so please please offer anything. Thanks!

(my Sisoftware Sandra report is here in my signature, and it's updated).

[islovernew]

sorry, just found out it wasn't included in my signature, so...

I'm using Win7 64bit Ultimate Edition
PT 8.0.4
Cubase 5

and here's the rest from the Sandra report:

Computer
Workgroup : WORKGROUP
Host Name : tom-PC
User : tom

Processor
Model : Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
Speed : 2.8GHz
Cores per Processor : 4 Unit(s)
Threads per Core : 1 Unit(s)
Type : Quad-Core
Integrated Data Cache : 4x 32kB, Synchronous, Write-Thru, 8-way, 64 byte line size, 2 threads sharing
L2 On-board Cache : 4x 256kB, ECC, Synchronous, ATC, 8-way, 64 byte line size, 2 threads sharing
L3 On-board Cache : 8MB, ECC, Synchronous, ATC, 16-way, Exclusive, 64 byte line size, 8 threads sharing

Computer
Mainboard : Intel DX58SO
BIOS : Intel Corp. SOX5810J.86A.3828.2009.0420.1948 04/20/2009
Bus(es) : X-Bus PCI PCIe IMB USB FireWire/1394 i2c/SMBus
Multi-Processor (MP) Support : No
Multi-Processor Advanced PIC (APIC) : Yes
Total Memory : 6GB DIMM DDR3

Chipset
Model : Intel X58 I/O Hub
Front Side Bus Speed : 2x 2.4GHz (4.79GHz)

Chipset
Model : Intel Core Desktop (Bloomfield) UnCore
Front Side Bus Speed : 2x 2.4GHz (4.79GHz)
Total Memory : 6GB DIMM DDR3
Channels : 3
Memory Bus Speed : 2x 532MHz (1GHz)

Memory Module(s)
Memory Module : Transcend JM1333KLU-2G 2GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)
Memory Module : Transcend JM1333KLU-2G 2GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)
Memory Module : Transcend JM1333KLU-2G 2GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)

Video System
Video Adapter : NVIDIA Quadro FX 570 (16 SM4.0 1.7GHz, 256MB DDR2 2x400MHz, PCIe 2.00 x16)

Graphics Processor

Storage Devices
Seagate ST3250410AS (250GB, SATA300, 3.5", NCQ, 16MB Cache) : 233GB (C:) (D:)
Seagate ST31000528AS (1TB, SATA300, 3.5", 7200rpm, NCQ) : 932GB (E:)
Brother DCP-130C (USB) : N/A (I:)
KingstonDataTraveler G2 8GB (USB) : 7GB (G:)
HL-DT-ST DVDRAM GH22NS40 (SATA150, DVD+-RW, CD-RW, 2MB Cache) : N/A (F:)
OLWTU AZCPE3WTI38 (SCSI, BD-R, HD-DVD-R, DVD+-R-DL, CD-R) : N/A (H:)

Logical Storage Devices
System Reserved : 100MB (NTFS)
BigOne (E:) : 932GB (NTFS) @ Seagate ST31000528AS (1TB, SATA300, 3.5", 7200rpm, NCQ)
Removable Drive (G:) : 7GB (FAT32) @ KingstonDataTraveler G2 8GB (USB)
SYSTEM (C:) : 106GB (NTFS) @ Seagate ST3250410AS (250GB, SATA300, 3.5", NCQ, 16MB Cache)
PROGRAMS (D:) : 127GB (NTFS) @ Seagate ST3250410AS (250GB, SATA300, 3.5", NCQ, 16MB Cache)
Removable Drive (I:) : N/A @ Brother DCP-130C (USB)
Optical Drive (F:) : N/A @ HL-DT-ST DVDRAM GH22NS40 (SATA150, DVD+-RW, CD-RW, 2MB Cache)
Optical Drive (H:) : N/A @ OLWTU AZCPE3WTI38 (SCSI, BD-R, HD-DVD-R, DVD+-R-DL, CD-R)

Peripherals
LPC Hub Controller 1 : Intel LPC Interface Controller
LPC Legacy Controller 1 : Winbond WPCD374L/376I/377I
Audio Device : Creative Labs SB1040
Disk Controller : Intel 4 port SATA IDE Controller
Disk Controller : Intel 2 port SATA IDE Controller
Disk Controller : Intel 6121 SATA2 Controller
USB Controller 1 : Intel USB UHCI Controller #4
USB Controller 2 : Intel USB UHCI Controller #5
USB Controller 3 : Intel USB UHCI Controller #6
USB Controller 4 : Intel USB EHCI Controller #2
USB Controller 5 : Intel USB UHCI Controller #1
USB Controller 6 : Intel USB UHCI Controller #2
USB Controller 7 : Intel USB UHCI Controller #3
USB Controller 8 : Intel USB EHCI Controller #1
FireWire/1394 Controller 1 : Intel TSB43AB22 1394a-2000 OHCI PHY/Link-Layer Controller
SMBus/i2c Controller 1 : Intel 801xx/63xx SMBus

Printers and Faxes
Printer : SmartSoft PDF Printer Driver (600x600, Colour)
Printer : Microsoft XPS Document Writer (600x600, Colour)
Fax : Microsoft Shared Fax Driver (200x200)
Printer : Brother DCP-130C (600x600, USB, Colour)

Scanners and Cameras
Scanner : Brother DCP-130C (Scanner, 600x2400, USB)

Peripherals
Media Player : ()
Media Player : Kingston DataTraveler G2 (7.45GB)

Network Services
Network Adapter : Intel(R) 82567LM-2 Gigabit Network Connection (Ethernet, 100Mbps)

Power Management
Mains (AC) Line Status : On-Line

Operating System
Windows System : Microsoft Windows 7 Ultimate 6.01.7600
Platform Compliance : x64

Windows Experience Index
Current System : 4.6

[RobY_surf]

got the same exact problem!
PLEASE someone?

[RobY_surf]

Bumping the massage again..

[Kap6oHaT]

don't post here your super computer configuration....it's a know problem and they(DIGI-AVID) can't solve it... or they just do not wont.

[RobY_surf]

are you serious? couse im waiting for days for them to answer...

[RobY_surf]

Pleeeeaaassse goddd
help me!

[o-ninja]

Hi I had the same issue, but could resolve by the driver.
ASIO4ALL 2.10 -English
http://asio4all.com/

I also tested on
Ableton Live Lite 8.2.2
and
Propellerhead Record 1.5.1
with the same driver
"Mbox 2 USB Family Drivers v9.0.2.65".
But the noise issue did not occur on those DAWs.
So I guess this is a CUBASE issue ...