hp probook 450 G7
hp Probook 450 G7 wont bootup F5,F8,F11 Amber (orange light ) help me Pls
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Hello Everyone!
I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died....06-28-2025, 02:57 PM -
I have this Dell Latitude 5420 with ST: CMF62F3, board GDF40 LA-K491P REV 3.0 that does not power on, i already searched for some clues about this problem that happens on mine but no BIOS i downloaded and flashed did anything.
Only when the power brick is connected, when pressing the power button an amber light lights up at the front and slight decreases its brightness, the RAM and the CPU seem to heat up if the laptop is left connected but nothing else, other than USB devices getting powered.
Here is the original BIOS dump from the 25R256JVEN chip. -
When i fully shut off mac, orange light goes off and wont react to power button. I have difficult time resetting with combination "shift+control+option and power button", because it rarely works (reason unknown), when i manage to get orange light and then press power button macbook wont turn on and orange light goes off. When i hold combination with power button it turns on, and works fine if put it to sleep mode.
Works with battery and charges, but when i shut off i get this problem.
It had liquid spill. Board has no corrosion, keyboard is working, power button... -
Hello,
I have a HP ProBook 650 G4 with a continuously blinking amber light, no post issue. The motherboard version is CHROMIA-6050A2930001-MB-A01(A1), no schematics or boardview is available for it.
What I have done so far is the following: There is no short anywhere on the board, and all high and low MOSFETs check out fine (I checked resistances across G-S-D as well as diodes). BIOS and EC both get 3.3V, I tried reflashing both with fixed versions from hoaca, no change.
I measured all coil voltages, see attached image for values, some get voltages, some... -
Hi everyone, I have a Nintendo 2DS XL that shows the orange charging light when plugged in, but nothing happens when I press the power button — no blue light, no screen, no sound.
Here's what I've observed:
All ribbon cables are properly connected
Battery is present and in good condition
No reaction even with screens disconnected
There's a visible burn mark / overheating sign on the metal shield, right above the CPU
I’m suspecting an issue with the CPU, PMIC, NAND, or a power...