asus x555uj strange behaviour

[jasko_jacker]

asus x555uj strange behaviour:
1 - reprogrammed bios -> it turn on with delay
2 - clear ME -> delay remain
3 - reprogrammed with another bios -> it turn on with delay
4 - clear ME -> delay remain
So after other checks:
1 - the delay time it's not the same
2 - with an hard disk from another asus -> it stuck at asus logo , sometime it reboot
3 - easyflash don't start -> blank screen and return to bios screen
4 - the battery led remain red after I disconnecting battery
I wish there is not a problem with PCH and I wish the issue came from ram or ite, any suggest ?

[SMDFlea]

Re: asus x555uj strange behaviour

Try booting from a linux cd/usb with the HDD board removed. If the delay is gone check,resolder or replace j3903 on the HDD board.

[jasko_jacker]

Re: asus x555uj strange behaviour

The system is not stable, this is the post code list after some shut and start
, I take last bios from this forum and and is considered working

system cold
-> push start
-> code 35 (20 sec)
-> code 79 (30 sec)
-> asus logo
-> code 78 (stuck at)

system hot
-> push start
-> code a9 (stuck no image but led on)

-> push to shut
-> immediately start
-> code a9 (30 sec)
-> code a6 (bios screen) this post is correct

-> push to shut
-> correctly shut down
-> push to start
-> code 78 (stuck at)

-> push to shut
-> immediatly start
-> code a6 (after 70 sec bios screen)

-> push to shut
-> remain off correctly
-> push to start
-> code 79 (20 sec)
-> code a6 (bios screen)

-> inser linux pendrive
-> push to start
-> code 79 (asus logo and stuck at for 60 sec)
-> restart itself
-> code 79 (asus logo -> blank screen -> stuck at for 60 sec)
-> restart itself
-> code 62 (blank screen, stuck at)

[piernov]

Re: asus x555uj strange behaviour

If it has soldered-on RAM, try with and without additional RAM stick.

[jasko_jacker]

Re: asus x555uj strange behaviour

I wanted to disable the onboard ram, but reading some posts and having done some tests in the past I decided that it was better not to try. I have a zenbook with a good video card and I preferred to put in the i7 of the x555uj .
Fortunately, it starts up correctly and charges the battery.
I can say that the problems were not about the processor and the bios, probably the ram was the cause.
But changing the dimm_sel really excludes the bank of ram ?
has anyone really managed to disable the bank?