Sometimes the power refresh that you performed is not enough. You need to disconnect the RTC coin cell battery from the motherboard as well.
* Disconnect the charger if connected.
* Disconnect the main battery.
* Disconnect the RTC coin cell battery - here's the [link|https://dl.dell.com/topicspdf/latitude-e7270-ultrabook_owners-manual_en-us.pdf|owner manual] go to p.15 to view the procedure. If you have a DMM (digital multimeter), check the voltage of the RTC battery when it is out. If it is <2.5V DC replace it. Search online for ''E7270 RTC battery'' to get suppliers
* Press and hold the Power button for 30 seconds.
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* Reconnect the RTC battery, main battery, reassemble the laptop, reconnect the charger and check if it turns on
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* Reconnect the RTC battery, reconnect the main battery, reassemble the laptop, reconnect the charger and check if it turns on
Sometimes the power refresh that you performed is not enough. You need to disconnect the RTC coin cell battery from the motherboard as well.
* Disconnect the charger if connected.
* Disconnect the main battery.
-
* Disconnect the RTC coin cell battery - here's the [https://dl.dell.com/topicspdf/latitude-e7270-ultrabook_owners-manual_en-us.pdf|owner manual] go to p.15 to view the procedure. If you have a DMM (digital multimeter), check the voltage of the RTC battery when it is out. If it is <2.5V DC replace it. Search online for E7270 RTC battery to get suppliers
+
* Disconnect the RTC coin cell battery - here's the [link|https://dl.dell.com/topicspdf/latitude-e7270-ultrabook_owners-manual_en-us.pdf|owner manual] go to p.15 to view the procedure. If you have a DMM (digital multimeter), check the voltage of the RTC battery when it is out. If it is <2.5V DC replace it. Search online for ''E7270 RTC battery'' to get suppliers
* Press and hold the Power button for 30 seconds.
* Reconnect the RTC battery, main battery, reassemble the laptop, reconnect the charger and check if it turns on
Hi,
Sometimes the power refresh that you performed is not enough. You need to disconnect the RTC coin cell battery from the motherboard as well.
* Disconnect the charger if connected.
* Disconnect the main battery.
* Disconnect the RTC coin cell battery - here's the [https://dl.dell.com/topicspdf/latitude-e7270-ultrabook_owners-manual_en-us.pdf|owner manual] go to p.15 to view the procedure. If you have a DMM (digital multimeter), check the voltage of the RTC battery when it is out. If it is <2.5V DC replace it. Search online for E7270 RTC battery to get suppliers
* Press and hold the Power button for 30 seconds.
* Reconnect the RTC battery, main battery, reassemble the laptop, reconnect the charger and check if it turns on