Win HomeServer network problem

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Hi!

My english is not the best so bear with me.

Ive got a problem with my Win HomeServer. Its been running for a few years I think without problems. But one month ago I lost access to my shared folder on the server. Ive got internet on the server and can browse the internet, but LAN network with sharing is gone. I logged into my server and its telling me on logon theres a service error, and to check the event log. Ive also tried a different network card + the onboard connetion. WinMgmt is getting an error on each logon:

Type: Error
Source: WinMgmt
Category: None
Event ID: 27
Description:
WinMgmt could not open the repository file. This could be due to insufficient security access to the "<%SystemRoot%>\System32\WBEM\Respository", insufficient disk space or insufficient memory.

Am thinking this might have something to do with it. This comes back when I ran ipconfig /all in cmd

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : homeserver
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
   Physical Address. . . . . . . . . : 00-14-85-B3-03-24
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IP Address. . . . . . . . . . . . : 192.168.0.197
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DNS Servers . . . . . . . . . . . : 192.168.0.1
   Lease Obtained. . . . . . . . . . : 18. desember 2010 09:35:35
   Lease Expires . . . . . . . . . . : 19. desember 2010 09:35:35

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Description . . . . . . . . . . . : Intel(R) PRO/1000 GT Desktop Adapter
   Physical Address. . . . . . . . . : 00-1B-21-2E-70-0F

Am running Service Pack 2, 2GB RAM with over 700GB free on the D volume and 6 GB on the system disk.

Latly ive gotten a Event log Warning.

Type: Warning
Source: CqvSvc.exe
Category: None
Event ID: 9000
Description:
Exception occurred: SystemManagement.ManagementException

Message: Initialization failure

+ this error:

Type: Error
Source: VSS
Category: None
Event ID: 8193
Description:
Volume Shadow Copy Service error: Unexpected error calling routine IEventSystem:Store. hr = 0x80040206

Anyone knows what this can be? Any other diagnostics I could run to tell you more?