Hp15r don't boot

[ravi_1617]

HP 15R problem
Hi. hp ZS050 LA-A992P
Flashed bios also
problem is display coms fine . goes inside bios fine .
doesn't boot to any media hardisk or usb... just hard disk led turns on and laptop turns off .. than on again
Thanks

[smali]

Re: Hp15r don't boot

replace YC1 and YC2 ( may be on your PCB) XTAL near on board CPU and post the result.

[ravi_1617]

Re: Hp15r don't boot

Ok i will update again thanks

[faisalali]

Re: Hp15r don't boot

i need hp 15-r100ne bios bin file
problem is that is switching but suddenly off with in 20 sec

[smali]

Re: Hp15r don't boot

Dear faisalali,
i think it is not bios fault have you received 1.35 voltage ob RAM coil? check all voltage on coil?

[faisalali]

Re: Hp15r don't boot

sir no voltage on RAM coil. ?

[ravi_1617]

Re: Hp15r don't boot

smali !!
Same condition. after changing both crystals.
Hard disk led blinks 1-2times than shutting down than on again cycles.

[ala_borbe]

Re: Hp15r don't boot

did you TURN OFF safe boot and TURN ON legacy or csm boot?

[abbas_govani]

Re: Hp15r don't boot

hi guys am having some different problem. had this board la-a992p and la-a994p. both laptop have same problem. laptop power on for 4 to 5 second then it off. had reflashed the firmware but no success. any suggestion welcomed.

thanks.

[bilal1992]

Re: Hp15r don't boot

try to change boot mod to legacy .

[abbas_govani]

Re: Hp15r don't boot

there is no display. so cant change to legacy mode.

[raajkumar]

Re: Hp15r don't boot

hi guys am having some different problem. had this board la-a992p and la-a994p. both laptop have same problem. laptop power on for 4 to 5 second then it off. had reflashed the firmware but no success. any suggestion welcomed.

thanks.

I had the same issue on LA-A994P. I removed LVDS Connector from motherboard. Now the laptop working for long, Harddisk also reading. I checked that cable, there is short on ( Camera line ) 3v line found. Now i ordered for new cable and waiting for that. Try to flash following file have Main + EC.

[vishalcomputers]

Re: Hp15r don't boot

Hell every.
I have one problem
Hp la-a992p. Motherboard
Allworking fine external display also working fine
But internel display only back light on no image.
I change creen new one ad cabel also.
Plz gaide me.

[ravi_1617]

Re: Hp15r don't boot

Hi ,I have LA-A992P
Laptop working /booting fine with adaptor power only.
When connected with battery.
Board Turns on ,only backlight is on, no text or image.
Board has Graphic chip too.
Found coil PLV1 burnt /open due to short PCV4 short.
Replaced both but ,no improvement
Battery is also no charging.

Thanks

[mcplslg123]

Re: Hp15r don't boot

Try with another known good battery first.

[ravi_1617]

Re: Hp15r don't boot

Already checked it ,just now solved,PQ101 was short.
Thanks

[ravi_1617]

Re: Hp15r don't boot

hi guys am having some different problem. had this board la-a992p and la-a994p. both laptop have same problem. laptop power on for 4 to 5 second then it off. had reflashed the firmware but no success. any suggestion welcomed.

thanks.

Hi
same problem board starts and turns off after 4-5 seconds .
no power at PLM2 1.3VOLT, PRM4 5R1 was open .
now power present at PLM2 .
now board starts ON&OFF .its self turns on &off power led on/off onoff...
no power at PLZ2 .PLG1 nil power CPU stats heating slowly
PLZ2 ref GND 5.1 Ohm/PLG1ref GND 2.7 Ohm suspect CPU not short
PL002 1.02 VOLTS present
Bios flashed
still same,
no replaced ISL95833B (PIZ1)
Thanks