7DEOH%HHS&RGH3267(UURU%HHS&RGHVFRQWLQXHG | 3UREDEOH&DXVHV | |
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Screen initialization failure | Faulty video subsystem | |
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| (defective graphics adapter |
card) | ||
Search for video ROM |
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| failure |
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No timer tick | Defective system board | |
Shutdown failure |
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Gate A20 failure |
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Unexpected interrupt in pro- |
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| tected mode |
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Memory failure above | Faulty or improperly seated | |
| address 0FFFFh | DIMMs |
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Defective system board | ||
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Bad battery or defective sys- | ||
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| tem board |
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Serial/parallel port test | Faulty I/O chip (defective sys- | |
| failure | tem board) |
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Beep Codes and Error Messages |