Start Menu, Taskbar Missing; Clipboard Doesn't Work
In Windows XP, you may have the following symptoms:
- The Start Menu is missing and Ctrl-Esc does not make it appear;
- The Taskbar is missing, although a strip of 4-5 pixels can be seen, it cannot be moved or resized;
- You cannot copy anything into the clipboard using Ctrl-C or Edit → Copy;
- You cannot open items in the Event Viewer;
- Upon logging in, explorer.exe crashes and then restarts several times, which causes the desktop icons to disapper and re-appear;
- No network connectoids appear under Properties of My Network Places;
- Errors are logged in the Application Event log with Source: EventSystem, Event: 4609;
- Microsoft Outlook does not communicate properly with Microsoft Exchange Server;
- Clicking on hyperlinks in Internet Explorer does not work (nothing happens);
- Right-clicking hyperlinks in Internet Explorer and choosing Open Link in New Window does not work (nothing happens);
- Task Manager shows an instance of svchost.exe running at 100% or close to it; and
- Process Manager shows ADVAPI32.dll!CryptVerifySignatureW running at 100% or close to it under the C:\Windows\system32\svchost -k rpcss process.
This appears to be resolvable by running a System File Check, with the following command:
You will need your original Windows XP operating system CD. If you have upgraded to Service Pack 1 or Service Pack 2, this will work best if you create a new operating system disk with the service pack slipstreamed into the CD image.
When completed, reboot.