Dell Latitude 7290 Power Cycling

[ianbak]

Hi,

I have a Dell Latitude 7290 that power cycles instead of turning on. The circuit board is an LA-F311P

I have systematically checked pretty much every internal voltage, and they all seem to be present except for CPU Vcc_Core, which doesn't turn on.
The impedence the Vcc_Core coils is 8.3 Ohms, though, which seems reasonable.
Vcc_SA does get enabled, and reads 1.05V. This is driven by the same power controller IC as Vcc_Core, so I am assuming that that is good.
There is no Vcc_GT, but I have read that that can be normal as it only turns on when GPU...

[smallvhin]

Master help to fix my bios stock in "bios is updating" I already update my bios to first release and latest but no luck.
more thanks
bios file
ec file...

[repair-it]

I tried to locate online without any success but maybe someone else might have better luck. If it is a double diode - it's done - based on the reading I got in diode mode....

[numuni1]

Hi! is their any way to remove supervisor lock on this bios?
Auto patcher wont work?
or is their a default bin file on this?
thank you for answer...

Lenovo THinkpad e14 gen 4
Board: JE443/JE543 NM-E501
Model: 21ECS17C00
S/N: PF46PAJ8...

[mkdj]

Hello everyone,

Mark and model: ASUS X571
Symptoms: not turning on. There is only the LED battery indicator working. The owner of the laptop told me this problem arrived one week after having changed the battery. He then managed to power on the laptop only once, and then it never powered on again.

Tests already made:
- Battery is charging when laptop is plugged in. The LED battery indicator turns white after a couple of hours of charge, indicating that battery is fully charged. However, laptop won't turn on anyway, with or without AC plug.
- I have removed...

[Waly411]

Necesito quitarle la contraseña a la bios
cnd1468024
gpt52 la-k201p Rev 3.0
I need to remove the bios password
cnd1468024
gpt52 to-k201p Rev 3.0
in English please.....

[vatecnica]

Hello friends i haave a victus the power led turn on for a sec then turn off until i press the pwr btn again! i guess its the bios! can you help me?


SN:5cd42526ld
productID: 9z7l4ua#aba

MOBO: DAG3PSMB8C0 rev C...

[Lgolebio]

MSI: Katana GF76
Motherboard: MS-15821 Ver: 2.1
CPU: Intel® Core™ i7-11800H
KBC: KB9548QF

Motherboard in power off state consumes 0.040A. It reacts on power switch and consumes 0,041A. KBC programmed, BIOS programmed, no difference. 3,3V and 5V are working. No liquid damage. Resistance on coils below:...

[martin83]

Hello everyone.
I'm here to ask for help troubleshooting an issue with my Acer Nitro 5 An55-515. Board number fh51m LAJ871P .
The laptop turns on without any image, and after inspection, I noticed the 1.2V voltage was reading 8V spikes. The PQM1 MOSFET's gate was shorted to the source.
I replaced PQM1, PQM2, and PUM1. After turning on the machine, the 1.2V voltage appears correctly for about 1 minute, but after that, PQM1 shorted again. The MOSFET and controller assembly has already been replaced twice and continues to blow. I can't understand what's going on. I should also add...

[Ellos]

ASUS Zenbook UX6404VV-M3005W
remove bios password, i tried saving current bios with aptio 5 afu but tool can't read bios content so i decided to get some help before doing smthing irreversible,

SN=R4N0CX01M525140, CN=J1WJ, MFD=2023-04, P/N=90NB11J1-M00050

post moved...next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread.....