Create a new virtual machine failed with "could not initialize" in Hyper-V

I've installed Windows Server 2008 R2 and enabled the Hyper-V role, on a computer with a single 80G hard disk(1 partition) and 4GB of physical RAM.

I've enabled NX/DEP and VT (virtualization assist) in BIOS.

I create a virtual machine with the below configuration.
Name: qqq
Memory: 512 MB
Network: Not Connected
Hard Disk: C:\vm\qqq.vhd
Operating System: Will be installed at a later time

Start the virtual machine. It failed with "'qqq' could not initialize". Below is the related event logs. Anyone can give me some advice.


Source: Microsoft-Windows-Hyper-V-VMMS
Event ID: 14094
Description: Virtual Machine Management service is started successfully.


Source: Microsoft-Windows-Hyper-V-Image-Management-Service
Event ID: 15111
Description: The system successfully created 'C:\vm\qqq.vhd'.


Source: Microsoft-Windows-Hyper-V-Hypervisor
Event ID: 16641
Description: Hyper-V successfully created a new partition (partition 2).


Source: Microsoft-Windows-Hyper-V-Worker
Event ID: 3430
Description: 'qqq' failed to set/change partition property: The system cannot find message text for message number 0xqqq in the message file for 92E4DC1D-8DBD-4CA8-B50A-908A25033A23. '0x8007013D'.


Source: Microsoft-Windows-Hyper-V-Worker
Event ID: 3040
Description: 'qqq' could not initialize. (Virtual machine ID 92E4DC1D-8DBD-4CA8-B50A-908A25033A23)


Source: Microsoft-Windows-Hyper-V-Hypervisor
Event ID: 16642
Description: Hyper-V successfully deleted a partition (partition 2).


A full event log for you reference.
Log Name: Microsoft-Windows-Hyper-V-Worker-Admin
Source: Microsoft-Windows-Hyper-V-Worker
Date: 11/12/2010 5:07:22 AM
Event ID: 3430
Task Category: None
Level: Error
Keywords:
User: NETWORK SERVICE
Computer: WIN-MBRHNGI51RT
Description:
'qqq' failed to set/change partition property: The system cannot find message text for message number 0xqqq in the message file for 92E4DC1D-8DBD-4CA8-B50A-908A25033A23. '0x8007013D'.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Hyper-V-Worker" Guid="{51DDFA29-D5C8-4803-BE4B-2ECB715570FE}" />
<EventID>3430</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2010-11-12T13:07:22.421875000Z" />
<EventRecordID>19</EventRecordID>
<Correlation />
<Execution ProcessID="2732" ThreadID="1232" />
<Channel>Microsoft-Windows-Hyper-V-Worker-Admin</Channel>
<Computer>WIN-MBRHNGI51RT</Computer>
<Security UserID="S-1-5-20" />
</System>
<UserData>
<VmlEventLog xmlns:auto-ns2="http://schemas.microsoft.com/win/2004/08/events" xmlns="http://www.microsoft.com/Windows/Virtualization/Events">
<VmName>qqq</VmName>
<VmId>92E4DC1D-8DBD-4CA8-B50A-908A25033A23</VmId>
<ErrorCodeString>%%2147942717</ErrorCodeString>
<ErrorCode>0x8007013D</ErrorCode>
</VmlEventLog>
</UserData>
</Event>