https://youtu.be/0MkBwakDwlk


i've included link for video showing the issue
the laptop doesn't start and only numlock light once and off or sometimes it stayed lighting for two second and off. there's no response from the laptop
it started two days ago the lap work fine then restart from it's own few times
then when i try to start it show the logo screen then restart and now won't start and doing that symptoms

what i've tried.
changes thermal paste, Bios battery, Ram , even the processor , power Adapter

so what could...

Does anyone have the BRD & schematic? I'm having an issue with the fan running at %100 after cleaning up some liquid damage.

Hi Guys.
Here I have a 4070ti with some issues.
When powered on the led lights which power on (where the zotac logo is) flash green 3 times. Once it has flashed green 3 times it does not post.

Just to mention I have not worked on many 40x cards before therefore some of my assumptions could be wrong. If you do happen to find that my analysis is wrong or I have missed something feel free to comment.
Additionally, I do not have a schematic for this exact card model so if anyone is willing to post the schematic it would be much appreciated.


Resistances:...

Hello!
New here. I just bought a broken Focusrite to begin my journey in repairing stuff.
I would like the schematic for the Focusrite Scarlett 2i2 3rd Gen audio interface.
Thanks in advance if anyone answers!

The customer gave me this for changing the old battery, and then I replaced the new battery. always showing this message. I changed many chargers and programmed the new BIOS as well. Does someone have any idea for this message?




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Dell laptop (E7440, uses the notorious CD3301B power controller + MEC5075 EC + BQ24715 charger IC)
Symptoms:

• Laptop works normally on a pre-charged battery.
• Battery does not charge when adapter is connected.
• Without battery:
  • Laptop powers on from DC adapter, passes CPU/RAM init checks, then cuts DC power abruptly.(seems to shutdown one of the mosfets in the charger path). Then the loop continues indefinitely
  • Speakers “pop” when power cut occurs indicating harsh sutdown.
  • If RAM is removed, the system shows RAM missing blink error code indefinitely without cutting DC power

...

I have a Lenovo E15 Gen.3, motherboard NM-D481 with a defective USB-C port. The device starts with battery. When connected to the USB-C power supply, it does not start or charge. 20V is present at the input of the UT5 (High voltage USB PD power switch), 0V at the output
UT5 pin 3 (SNK_PS_EN) =0V
RPT3 Pin1+2 LDO 3V3 present
I suspect that the UT2 USB-C power controller is defective because the UT5 is only controlled by the UT2. However, the UT2 supplies on pin 33 (+LDO_3V3) which makes me wonder if it is defective after all. Unfortunately I don't have it here to test it.
...

I use a Samsung NP300E5C but it cant enter bios setup. Can anyone give me a stock non-modded P07RAC or P04RAC ROM?

Greetings everyone.
please, help assist me with the above PC problem.

The boars number is 6050A2559101-MB-A03. The PC does not recognized HDD, neither does it recognized NGFF SSD.

i discovered that the HDD does not spin.
there were activities at the SATA connection.

Pin 2,3,5,6 rises to 400mv then jump to about 4v, again to mv. It continues in loop that way. Same behaviour at pin 20,21,22.

5v is present at 14,15,16.

Pin 18 which is reserved has about 1.8v, sometimes it increases to 2v+.

Pin 8,9,10 is...

Hello,

I have a Lenovo Legion 7 with the following specs:

• RTX 3080
• Ryzen 9 5900HX

A problem started suddenly overnight. The next morning, the laptop wouldn't boot properly — the RGB lighting on keyboard turned on, fans spun for a brief moment, but the screen remained black, and the Caps Lock key didn't respond (no indicator light).
When running on battery power, the laptop would stay in this state for about 35 seconds before automatically shutting off. When plugged into AC power, it would keep restarting every 35 seconds. Holding the power button would shut it down, but...

Hi everyone,

I'm having a serious issue with my ASUS Zephyrus GA401I (4 years old, worked perfectly until recently). The system is lagging heavily, even in the BIOS, and is charging extremely slowly (a few percent in hours), making it nearly unusable. I suspect a motherboard or power delivery issue.

Symptoms:

• Severe lag across the system, including BIOS navigation.
• Slow boot times and unresponsive performance in Windows.
• Battery charges very slowly (e.g., ~5% in 2–3 hours).
• No error messages or BSODs, just extreme sluggishness.

What I've Tried:

• Replaced

...

pwwaa la-6847p rev 1.0 Convert graphics DIS to UMA. Please help.
ATI to Intel Graphics.
Toshiba Satellite C660-1m0

Hello everyone! I have an old hp workstation z420. Xeon E5 1620 v2, 8gb ecc ddr3

Basically, when I plug in the power cable to the power supply, it turns on and off while clicking every time it power cycles. Once I remove the power cable from the supply, it flashes a red light 4 times while beeping for about 10 seconds. I have purchased a new CPU and power supply already, but that hasnt fixed it so I'm convinced it's a motherboard level fault. If anyone has any ideas on what the fault could be, and/or how to diagnose it, that would be highly appreciated. Thanks!

Hello everyone.
I have a GK7MR0R (XMG Core 17) The device does not start. When I press the power button, the device tries to start and draws 0.8A for a second. According to the schematic, the following voltages should be present in the connected power supply unit and these are also present:
+5VALW
+3VALW
+3VALW_PCH
+1.8V_PRIM
+1.05VO_OUT_FET
The battery is being charged.

First I tried to rewrite the BIOS, same behavior.
Another user had the same behavior and his chipset was defective. I also changed the chipset, same behavior.
...

Hi,

I have a MacBook Pro 13 inch A2238 M2 and it was stuck 5V with 0 amps. I measured some important lines and I found a short on PP3V8_AON_MPMU_ISNS_VIN, I tried injecting 1v and I saw heat coming from the mPMU so I removed the pmu thinking that was the problem. I don't know why I didn't check the other side of the border but there it was, a shorted cap. I replaced the cap and the short was gone, so I reballed the PMU and put it on again but voltage was still stuck at 5V and the current was fluctuating between 0 and 0.45 amps. I checked under the thermal camera and I saw the mPM...