SP1. Ako ga ima, de-instalirat i ponovno instalirati. Ako to ne pomogne, ili ti je ovo dole jednostavnije:
Evo šta kaže TechNet: (Q320558)
Delete the NextID value in the registry, and then restart the computer. To do this, follow these steps:
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate and click the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Telephony\Cards
In the right pane of the Registry Editor window, click NextID.
On the Edit menu, click Delete.
When you are prompted to confirm the deletion, click Yes.
On the File menu, click Exit to quit Registry Editor.
Start the New Connection Wizard, and then create a new dial-up modem connection or PPPoE connection.
If the issue is resolved and you can create a new dial-up modem connection or PPPoE connection, do not follow the remaining steps in this article.
If the issue is not resolved, continue to Method 2.
Method 2
Delete the Telephony key in the Windows registry, and then do an in-place upgrade of Windows XP. To do this, follow these steps:
Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate and click the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Telephony
On the Edit menu, click Delete.
When you are prompted to confirm the deletion, click Yes.
On the File menu, click Exit to quit Registry Editor.
Do an in-place upgrade of Windows XP.