Question Dead laptop, caps lock blinks 2 times ?

[aidin01811]

Laptop model: Schenker XMG P705 (Clevo P671SE)

Hello. I have a gaming laptop which won't turn on at all (no fan spin, no heat on cpu or gpu or ite chip, usb ports works for few seconds when press power on). The adaper is fine. And all I get from the laptop is the caps lock LED flashes two times. I've googled about this and I found something about reprogramming bios. I know how to reprogram the bios.

Solutions I've tried:

• removing ram
• removing storage
• removing battery
• resetting cmos

All I didn't do is use a multimeter to see if there is a faulty component in the motherboard. Haha
I hope the problem won't be there.

Do you have any ideas?
Thanks

 

[Ralston18]

Multi-meter not likely to prove helpful without motherboard pinouts, specs, and schematics, etc..

= = = =

Full laptop specs and OS information?

Will the laptop boot into Safe Mode?

Is all important data backed up?

 

[aidin01811]

Laptop model: Schenker XMG P705 (Clevo P671SE)

Specs:
processor
Intel Core i7-4720HQ 4 x 2.6 - 3.6 GHz ( Intel Core i7 )

graphic card
NVIDIA GeForce GTX 965M - 2048 MB VRAM, core clock: 924 MHz, memory clock: 2500 MHz, GDDR5, ForceWare 344.54, Optimus

main memory
8GB, 2x 4 GB SO-DIMM DDR3 RAM PC3-12800 (1600 MHz), 2 of 4 slots occupied, maximum 32 GB

Screen
17.30 inch 16:9, 1920 x 1080 pixels, Chi Mei N173HGE (CMO1720), TN LED, Full HD, glossy: no

motherboard
Intel HM87 (Lynx Point)

Mass storage
Kingston SM2280S3120G 120GB, M.2 SSD + Seagate Momentus ST1000LM024, 1000 GB HDD @ 5400 rpm. Bays: 2x M.2 (Type 2280) & 2x 2.5-inch

Sound card
Realtek ALC892 @ Intel Lynx Point PCH - High Definition Audio Controller

connections
4 USB 3.0 / 3.1 Gen1, 1 HDMI, 2 DisplayPort, 1 Kensington Lock, 1 eSata,
Audio Connections: Headphones, Microphone, S/PDIF, Card Reader: MMC, RSMMC, SD, Mini SD, SDHC, SDXC

network
Realtek PCIe GBE Family Controller (10/100/1000MBit/s), Intel Dual Band Wireless-AC 3160 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.0

You can also watch the all specs here:
https://www.notebookcheck.com/Test-Schenker-XMG-P705-Clevo-P670SA-Notebook.133283.0.html

The above laptop specs is for p670sa. Mine is p671se which has gtx 970m and i7 4720hq.

I don't know about the OS because I bought this laptop secondhand. But the bios is AMI Aptio. I can see it on the motherboard.

The laptop won't boot at all. Just led lights comes when i plug the charger. And for 3 seconds usb ports works after pressing power button (ex: mouse light).

all data is backed up.

this is the website for drivers and bios firmware:

https://download.schenker-tech.de/package/xmg-p705/

There are simillar schematic to this laptop. Same company.

There are two bios chips on this laptop.
1: gigadevice 25b32bsig
2: gigadevice 25b15bsig

 

[aidin01811]

Well, now I found out that the PCH of this laptop gets too much hot when charger plugged in. This happend after I cleaned the motherboard with alcohol. And I found out that the RTD2136N-CG chip is missing from the motherboard which is for power up sequence, according to the schematic. And two pins of this chip is kind of shorted. You can clearly see it in the image(middle of the chip).
Most of the capacitors are shorted, I don't know if this chip made this problem or the pch.
I have no idea why the PCH gets hot after charger plugges in. Maybe because of the RTD2136 chip missing.
What do you think?