![](/images/backgrounds/288756/hp-laptop-300-users-manual-54703038x1.png)
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| C |
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| Clean boot: |
| Yes |
| Can you put | No |
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| suspect mouse in | |||
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| Ctrl Alt Del, |
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| known good OB? |
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| press F5 when |
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| starting |
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| Run OB |
| Yes |
| Suspect mouse | No |
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| diagnostic |
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| works in known | ||
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| program |
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| good OB? |
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| Yes | Does mouse | No |
| Put known good |
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| OB mouse in |
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| pass all tests? |
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| suspect base |
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| unit |
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| Boot normally to | Remove mouse |
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| Windows |
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| from OB base |
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| unit, examine | Yes |
| Known good | No | |
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| mouse, and |
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| mouse works? |
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| reinsert |
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Yes | OB mouse | No |
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operates |
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| Suspect bad | ||
| correctly? |
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| Run OB |
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| mouse. | ||
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| diagnostic |
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| program |
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| Replace mouse. | |
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| Done: Suspect |
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| Have customer | |
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| call back if | ||
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| software problem | Does mouse |
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| problem not | ||
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| solved. | |||
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| Yes pass all tests? | No |
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| Done |
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| Done: Suspect bad |
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| OB base unit | Done | ||
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