Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It seems like Dell has a few models where the motherboard is sensitive to the CMOS battery voltage being at 2.5-3V. It’s usually revivable by “resetting” the CMOS RAM, but you should check the voltage and replace if it’s less then 2.5V to prevent the issue from coming back. HP and Lenovo aren’t as sensitive about it.
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All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it. If this doesn't work the motherboard is bad and at that point the laptop isn't worth fixing at this point due to how old the series is.
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All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it - the install delay is to confirm if the CMOS RAM corrupted and can be used, or if the voltage is too low. If this doesn't work the motherboard is bad and at that point the laptop isn't worth fixing at this point due to how old the series is.
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It also seems like Dell has more issues with it then HP and Lenovo on a few models and both the 7490 and E7440 are ones I've seen it before.
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Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It seems like Dell has a few models where the motherboard is sensitive to the CMOS battery voltage being at 2.5-3V. It’s usually revivable by “resetting” the CMOS RAM, but you should check the voltage and replace if it’s less then 2.5V to prevent the issue from coming back. HP and Lenovo aren’t as sensitive about it.
All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it. If this doesn't work the motherboard is bad and at that point the laptop isn't worth fixing at this point due to how old the series is.
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It also seems like Dell has more issues with it then HP and Lenovo on a few models and both the 7490 and E7440 are ones I've seen it before.
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All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it.
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All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it. If this doesn't work the motherboard is bad and at that point the laptop isn't worth fixing at this point due to how old the series is.
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It also seems like Dell has more issues with it then HP and Lenovo on a few models.
+
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It also seems like Dell has more issues with it then HP and Lenovo on a few models and both the 7490 and E7440 are ones I've seen it before.
All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it.
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490.
+
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490. It also seems like Dell has more issues with it then HP and Lenovo on a few models.
All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it.
Try to disconnect the CMOS battery. For some odd reason, these machines are more prone to CMOS RAM corruption then later models like the 7490.
All you need to do is remove the bottom panel, disconnect the CMOS battery for a minute, restart the notebook without it and then reinstall it.