No display, internal or external indicates that the laptop is not passing POST (power on self test) or if it is it's not booting into the OS.
Can you get into BIOS with a working display? To get into BIOS turn on the laptop and quickly press f10 or quickly press Esc, and then press f10 when the Start menu is displayed. Note: External monitor doesn't work in BIOS mode, only internal i.e. laptop screen
Did you disconnect the battery from the motherboard, first thing after opening the case, before commencing to disassemble the rest of the laptop so as to replace the keyboard?
Try a full power refresh as check if that resolves the problem in case a corrupted BIOS is the cause of the problem.
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* Disconnect the charger from the laptop (if connected and then open the laptop and disconnect the battery cable from the motherboard and then disconnect and remove the RTC coin cell battery from the motherboard.
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* Disconnect the charger from the laptop (if connected) and then open the laptop and disconnect the battery cable from the motherboard and then disconnect and remove the RTC coin cell battery from the motherboard.
Here's the [link|https://kaas.hpcloud.hp.com/pdf-public/pdf_5757097_en-US-1.pdf|maintenance and service guide] that will help. Go to p.46 and p.75 to view the procedure to remove the battery and the RTC battery, respectively.
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect the RTC battery, reconnect the battery, reassemble the laptop, connect the charger and check if it turns on OK
If it does there may be a message stating that the date and time are incorrect. This is normal as the BIOS has been reset back to factory default by the above procedure. Once the date and time have been corrected, the message won't appear the next time the laptop is started. Also any user definable BIOS settings that were altered by the user, to suit whatever operating requirements were needed, will have to be changed back also.
If it still doesn't work, what's the motherboard model number (printed on motherboard) e.g. 6050A3316601-MB-A01 or similar? Knowing this will help to find the schematics for the motherboard which will be needed to find out what's wrong.
No display, internal or external indicates that the laptop is not passing POST (power on self test) or if it is it's not booting into the OS.
Can you get into BIOS with a working display? To get into BIOS turn on the laptop and quickly press f10 or quickly press Esc, and then press f10 when the Start menu is displayed. Note: External monitor doesn't work in BIOS mode, only internal i.e. laptop screen
-
Did you disconnect the battery from the motherboard, first thing before commencing to disassemble the rest of the laptop so as to replace the keyboard?
+
Did you disconnect the battery from the motherboard, first thing after opening the case, before commencing to disassemble the rest of the laptop so as to replace the keyboard?
Try a full power refresh as check if that resolves the problem in case a corrupted BIOS is the cause of the problem.
* Disconnect the charger from the laptop (if connected and then open the laptop and disconnect the battery cable from the motherboard and then disconnect and remove the RTC coin cell battery from the motherboard.
Here's the [link|https://kaas.hpcloud.hp.com/pdf-public/pdf_5757097_en-US-1.pdf|maintenance and service guide] that will help. Go to p.46 and p.75 to view the procedure to remove the battery and the RTC battery, respectively.
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect the RTC battery, reconnect the battery, reassemble the laptop, connect the charger and check if it turns on OK
If it does there may be a message stating that the date and time are incorrect. This is normal as the BIOS has been reset back to factory default by the above procedure. Once the date and time have been corrected, the message won't appear the next time the laptop is started. Also any user definable BIOS settings that were altered by the user, to suit whatever operating requirements were needed, will have to be changed back also.
If it still doesn't work, what's the motherboard model number (printed on motherboard) e.g. 6050A3316601-MB-A01 or similar? Knowing this will help to find the schematics for the motherboard which will be needed to find out what's wrong.
No display, internal or external indicates that the laptop is not passing POST (power on self test) or if it is it's not booting into the OS.
-
Can you get into BIOS with a working display? To get into BIOS turn on the laptop and quickly press f10 or quickly press Esc, and then press f10 when the Start menu is displayed.
+
Can you get into BIOS with a working display? To get into BIOS turn on the laptop and quickly press f10 or quickly press Esc, and then press f10 when the Start menu is displayed. Note: External monitor doesn't work in BIOS mode, only internal i.e. laptop screen
Did you disconnect the battery from the motherboard, first thing before commencing to disassemble the rest of the laptop so as to replace the keyboard?
Try a full power refresh as check if that resolves the problem in case a corrupted BIOS is the cause of the problem.
* Disconnect the charger from the laptop (if connected and then open the laptop and disconnect the battery cable from the motherboard and then disconnect and remove the RTC coin cell battery from the motherboard.
-
-
Here's the [https://kaas.hpcloud.hp.com/pdf-public/pdf_5757097_en-US-1.pdf|maintenance and service guide] that will help. Go to p.46 and p.75 to view the procedure to remove the battery and the RTC battery, respectively.
+
Here's the [link|https://kaas.hpcloud.hp.com/pdf-public/pdf_5757097_en-US-1.pdf|maintenance and service guide] that will help. Go to p.46 and p.75 to view the procedure to remove the battery and the RTC battery, respectively.
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect the RTC battery, reconnect the battery, reassemble the laptop, connect the charger and check if it turns on OK
-
If it does there may be a message stating that the date and time are incorrect. This is normal as the BIOS has been reset back to factory default by the above procedure. Once the date and time have been corrected, the message won't appear the next time the laptop is started. Also any user definable BIOS settings that were altered by the user, to suit whatever operating requirements were needed, will have to be changed back also.
If it still doesn't work, what's the motherboard model number (printed on motherboard) e.g. 6050A3316601-MB-A01 or similar? Knowing this will help to find the schematics for the motherboard which will be needed to find out what's wrong.
Hi @user23412
No display, internal or external indicates that the laptop is not passing POST (power on self test) or if it is it's not booting into the OS.
Can you get into BIOS with a working display? To get into BIOS turn on the laptop and quickly press f10 or quickly press Esc, and then press f10 when the Start menu is displayed.
Did you disconnect the battery from the motherboard, first thing before commencing to disassemble the rest of the laptop so as to replace the keyboard?
Try a full power refresh as check if that resolves the problem in case a corrupted BIOS is the cause of the problem.
* Disconnect the charger from the laptop (if connected and then open the laptop and disconnect the battery cable from the motherboard and then disconnect and remove the RTC coin cell battery from the motherboard.
Here's the [https://kaas.hpcloud.hp.com/pdf-public/pdf_5757097_en-US-1.pdf|maintenance and service guide] that will help. Go to p.46 and p.75 to view the procedure to remove the battery and the RTC battery, respectively.
* ''Press and hold the laptop's Power button for a full 30 seconds and then release it.''
* Reconnect the RTC battery, reconnect the battery, reassemble the laptop, connect the charger and check if it turns on OK
If it does there may be a message stating that the date and time are incorrect. This is normal as the BIOS has been reset back to factory default by the above procedure. Once the date and time have been corrected, the message won't appear the next time the laptop is started. Also any user definable BIOS settings that were altered by the user, to suit whatever operating requirements were needed, will have to be changed back also.
If it still doesn't work, what's the motherboard model number (printed on motherboard) e.g. 6050A3316601-MB-A01 or similar? Knowing this will help to find the schematics for the motherboard which will be needed to find out what's wrong.