Acer Chromebook 514 bios repair

[kulokutoys]

CB514-1W-50VN
DA0ZBUMBAF0 REV. F
sn: NXAU0SP005225159A67600
snid: 22508848676

turning on no post, power cycling...

[Ugur87]

Hello

ive got a brand new Xplus Series 81 mini Notebook, but its not turning on, my friend take it and make something with it, everthing looks fine , charging , power input perfect , fans spinning but no image, now i read the bios chip with ch341a programmer, i think its corrupted, is there any way to fix a corrupted bios bin ? please help...

[cashkennedy]

An ebay seller shipped me this broken tablet by mistake, and so I got my money back, but there are a decent amount of these seemingly in perfect shape but with screen issues (this tablet was clearly a return that had never been used or setup, so I don't think any physical damage occurred, also is a kids model so large bumpers on cover that isn't in picture) Is this a loose lvds cable or anything repairable beyond replacing the screen which would come with its own integrated tcon which is maybe where the problem would be?

The power on screens just exhibit the sideways smear, once...

[bilsad]

Hello guys,

Does anyone have a dell 9430, (LA-L461P) schematic and boardview diagram, i really appreciate your help.

[datajou]

Bios Clear Password & clean me...

[marcio fortes]

Boa noite , onde posso baixar esquena elétrico da placa Manchester xbox 360 ....

[jackx]

Thinkpad X1 Carbon Nano ZS1TL-7
need boardview and schema








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[survivalbloke]

This is a very weird issue which I'm having trouble finding a common thread.

The keyboard is registering keypresses in either the UEFI, or a live Linux USB environment - I used Ubuntu for testing. The keyboard backlight is lit.

The keyboard is registering keypresses in Windows or any Windows-related bootable device. For example, it does not work in Hirens Recue or a Windows 11 bootable installer.

When booted to Windows, not only is the keyboard not registering keypresses, but my USB keyboard is not either!

USB mouse and integrated trackpad...

[Francisco.s]

Hello, I'm trying to repair an HP 27 Quanta N76 (DA0N76MB6E0 Rev E).

I only get 3.3V, 5V, and 1.05V; no other voltages.

I tried the BIOS and changed the KBC. The KBC self-programmed upon power-up after changing it.

The VR-On is missing for NCP81220, but 1.2V is also missing for DDR4, so 1P2V_PWRGD is low. SUSON or DDR_VTT_EN are not present on the DDR4 voltage regulator (RT8231BGQW). It seems the KBC isn't triggering these signals.

I'm using the Quanta N91 schematic, but there are too many changes that make it nearly impossible to measure signal...