Hi
Found this on MS Support
Forums:
To help resolve this issue, use the System File Checker tool (SFC.exe) to determine which file is causing the issue, and then replace the file. To do this, follow these steps:
- Open an elevated command prompt. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run As Administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
- Type the following command, and then press ENTER: sfc /scannow (yes there is a space after sfc) The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions.
Also have a look at this
thread
Hope this helps and regards
Yeah I've just read that one a while back today and did the scan but all was OK.
I have just also completed a full system scan with IO bit security 380 and it found four Trojans

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I will have to wait now until tomorrow to see if that has done the trick.