Having same problem after downgrading of window from Vista to Xp. Below are some details of my spec.
Operating System System Model
Windows XP Professional Service Pack 2 (build 2600) Acer, inc. Aspire 5920G
System Serial Number: LXAGW0X107722031E02500
Enclosure Type: Other
Processor a Main Circuit Board b
2.00 gigahertz Intel Core2 Duo
64 kilobyte primary memory cache
4096 kilobyte secondary memory cache Board: Acer, Inc. Chapala
Serial Number: LXAGW0X107722031E02500
Bus Clock: 200 megahertz
BIOS: Acer v0.3505 05/12/2007
Drives Memory Modules c,d
160.03 Gigabytes Usable Hard Drive Capacity
149.03 Gigabytes Hard Drive Free Space
HL-DT-ST DVDRAM GSA-T20N [CD-ROM drive]
Hitachi HTS541616J9SA00 [Hard drive] (160.04 GB) -- drive 0 2048 Megabytes Installed Memory
Slot 'M1' has 1024 MB (serial number 1234-B0)
Slot 'M2' has 1024 MB (serial number 1234-B1)
Local Drive Volumes
c: (NTFS on drive 0) 160.03 GB 149.03 GB free
Network Drives
None detected
Users (mouse over user name for details) Printers
local user accounts last logon
Bernard 6/17/2007 12:09:29 PM (admin)
local system accounts
Administrator 6/16/2007 8:34:59 PM (admin)
Guest never
HelpAssistant never
SUPPORT_388945a0 never
Marks a disabled account; Marks a locked account None detected
Controllers Display
Intel(R) 82801HEM/HBM SATA AHCI Controller
Primary IDE Channel [Controller]
Secondary IDE Channel [Controller]
Standard Dual Channel PCI IDE Controller NVIDIA GeForce 8600 GT [Display adapter]
AU Optronics 15.4 [Monitor] (15.4"vis, January 2006)
Default Monitor (2x)
Bus Adapters Multimedia
Standard Enhanced PCI to USB Host Controller (2x)
Standard Universal PCI to USB Host Controller (5x) None detected
Communications Other Devices
1394 Net Adapter
Broadcom NetLink (TM) Gigabit Ethernet
primary Auto IP Address: 192.168.1.64 / 24
Gateway: 192.168.1.254
Dhcp Server: 192.168.1.254
Physical Address: 00:1B:24:41:73:37
Intel(R) PRO/Wireless 3945ABG Network Connection
Dhcp Server: none responded
Physical Address: 00:19
2:2A:95:6D
Networking Dns Server: 192.168.1.254
OHCI Compliant IEEE 1394 Host Controller
Microsoft AC Adapter
Microsoft ACPI-Compliant Control Method Battery
HID-compliant consumer control device
HID-compliant device (3x)
Winbond HID CIR Receiver
USB Video Device
HID Keyboard Device
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
PS/2 Compatible Mouse
SDA Standard Compliant SD Host Controller
USB Composite Device
USB Root Hub (7x)
Await your immediate reply on this. Thanks !!