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My notebook (Acer Aspire 7520) is experiencing black screens (they happen every 20 minutes-1 hour) for which I have to manually reboot it and the system log says (I translated it from my IT log):

Fatal hardware error.

Signaled by the component: core processor Error Origin: Computer Control Exception Error Type: Unknown Error Processor APIC ID: 1

Further data is available here:

  • System

    • Provider

    [ Name] Microsoft-Windows-WHEA-Logger [ Guid] {C26C4F3C-3F66-4E99-8F8A-39405CFED220} EventID 18 Version 0 Level 2 Task 0 Opcode 0 Keywords 0x8000000000000000

    • TimeCreated

    [ SystemTime] 2013-04-11T15:53:47.254716200Z EventRecordID 2006

    • Correlation

    [ ActivityID] {CB63F343-53AF-41F9-930A-CC226252421A}

    • Execution

    [ ProcessID] 1056 [ ThreadID] 1068 Channel System Computer Alex-Mobile

    • Security

    [ UserID] S-1-5-19

  • EventData

    ErrorSource 3 ApicId 1 MCABank 2 MciStat 0xf600610000015311 MciAddr 0xc59b5b5f4d MciMisc 0x0 ErrorType 256
    TransactionType 256 Participation 256 RequestType 256 MemorIO 256 MemHierarchyLvl 256 Timeout 256 OperationType 256
    Channel 256 Length 864 RawData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

Sometimes there's another log warning that says: Event 19: hardware error corrected. By the way the screen remains black and I have to manually restart my pc.

What could be the cause? I'm using Windows 8 64 bit but freezes also happened with Windows 7 64 bit.

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1 Answer 1

This sounds like an actual hardware issue. Particularly since it occurs on two different operating systems.

Unplug all USB or other connected devices and monitor what happens. If you don't have anything connected regularly, then you should contact the hardware vendor to see if they have a diagnostics app you can run to test. The most common issue will be with bad RAM, but that will usually manifest itself as a random blue screen instead of a black screen.

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