The problem is you have malware controling settings use Malwarebytes to fix the black clock the following is a paste from malwarebytes scan i am all fixed using windows 7 pro
Malwarebytes' Anti-Malware 1.50
www.malwarebytes.orgDatabase version: 5245
Windows 6.1.7600
Internet Explorer 8.0.7600.16385
12/4/2010 8:29:48 PM
mbam-log-2010-12-04 (20-29-48).txt
Scan type: Quick scan
Objects scanned: 131818
Time elapsed: 2 minute(s), 56 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 4
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
(No malicious items detected)
Registry Keys Infected:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\ (Hijack.Zones) -> Quarantined and deleted successfully.
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
(No malicious items detected)
Folders Infected:
(No malicious items detected)
Files Infected:
c:\Users\digihlp\AppData\Local\Temp\xqy_7+p1.exe.part (Trojan.FraudPack.Gen) -> Quarantined and deleted successfully.
c:\Windows\Tasks\{22116563-108c-42c0-a7ce-60161b75e508}.job (Trojan.Downloader) -> Quarantined and deleted successfully.
c:\Windows\Tasks\{62c40aa6-4406-467a-a5a5-dfdf1b559b7a}.job (Trojan.FakeAlert) -> Quarantined and deleted successfully.
c:\Windows\Tasks\{bbaeaeaf-1275-40e2-bd6c-bc8f88bd114a}.job (Trojan.Downloader) -> Quarantined and deleted successfully.