Specs:

• CPU=AMD Ryzen 5 3500U
• GPU=(integrated) Radeon Vega Mobile
• RAM=8GB (2x4GB, a 4GB set is soldered), DDR4; 1x4GB Ramaxel, 2400MT/s, RMSA3310MJ86H9F-3200; 1x4GB Micron, 2400 MT/s, no part number (soldered)
• Storage=512GB, NVMe SSD, hfm512gdhtni-87a0b

Hello everyone.

My issue isn't massive, but I'd like to get this solved since I'm trying to fix a friend's laptop.

A botched BIOS update by Lenovo bricked this laptop, so I used my BIOS programmer to reflash the BIOS on it and saved it from an early demise. All is good now, but the BIOS reports the S/N, MTM and UUID...

Hi, I need a BIOS file for Lenovo 15ADA05. The machine turns on without video, there is fan spin all voltages are present (3.3v, 5v, 19v) and the power button LED keeps flashing. It powered on once and gave TPM error message. I've tried the Novo button and disconnected CMOS to reset but to no avail. I suspect the issue is the on board RAM so if anyone can also provide me with a BIOS that has the on-board RAM disabled for troubleshooting as well I will also be gladly appreciative. Attached is a dump I was able to pull off the BIOS as required. Thanks in advance.

IdeaPad 3 15ADA05....

Lenovo IdeaPad 3 15ADA05 Model: 81W1, how to disable onboard MICROTEC RAM?
Laptop freezes, sometimes no picture. POST every time with 4GB additional memory but still freezes in the windows.
SSD and BIOS seems to be OK.
Thank you....

You would need an SPI programmer to make a backup of the bios chip on the motherboard. https://www.badcaps.net/forum/troubl...21#post1622421 .Patching the bios does not work on every laptop, sometimes it can only be disabled by changing resistors around on the motherboard. Search the forum to see if anyone else has had success or not patching the bios or by moving resistors for this model https://www.badcaps.net/search?q=Idea...

model: IdeaPad 3 15ADA05 Laptop - Type 81W1
machine type model: 81W10127TX
serial number: PF2TCBRP

My onboard ram is broken. I need to disable it on BIOS and use only the additional 8gb ram that I added later. Can you help me with it? I don't know how to extract and link you my current BIOS. This is my first time to do something like this. Please help me I need my computer....

Hello.
Have this Lenovo Ideapad 3 15ADA05, that still freezing with CLOCK WATCHDOG TIMEOUT bsod page.

I reflash bios/last two days/, replace ram, disk, there is no onboard ram. nothing works

any hints?

Onboard samsung RAM disable info.

Remove 10kOhm RC1606, Install 2kOhm RC123

...

Re: IdeaPad 3 14ADA5/15ADA05/17ADA05 Lenovo V14-ADA/V15-ADA Bios

Greetings to all members! I need help with the repair. It's a Lenovo IdeaPad3 V15-ADA laptop and its problem is the same that it works but there's nothing on the screen, caps and numlock keys also don't light up. I've programmed the eeprom with multiple bios files but nothing changes... The board was inspected and I found nothing, there is no short circuit on transistors or etc... Can anyone check this original bios of his if it is damaged in some way or etc... Thank you all for your help.
No itegraded RAM....

Re: Mainboard problem Laptop Lenovo Ideapad 3 15ada05

I looked more closely under a microscope and the board is a mess. The mainboard from my computer had some ddr related problems. I ordered a "new" mainboard from aliexpress and the one that i got is a complete disaster. It has some missing components, i think the EC was changed and it is not welded properly. In the meantime I reflowed the ram on my board and everything works fine. I opened a dispute and sending this board back. I was just curious what can cause this symptoms cause the board was working except that fan...

Re: Lenovo IdeaPad 3 15ADA05 Onboard samsung RAM disable info

Hello.How can I disable SK Hynix oboard RAM?
RC123 i already 2kOhm and RC1606 is not populated on the board.


EDIT:
If someone has SK Hynix memory onboard, just remove RC1607 and the onboard ram will be disabled.

Re: Lenovo IdeaPad 3 15ADA05 Onboard samsung RAM disable info

Tested working, no issues at all. Components are on the underside of the board.

Cheers.

Re: Lenovo IdeaPad 3 15ADA05

I am working on a 17ADA05 NM-C821, I tried putting a bios file with integrated ram disabled, and didn't work, I tried to put my original bios again in the chip but it's not working either, any ideas, this is my original bios file....

Re: Lenovo IdeaPad 3 15ADA05 Onboard samsung RAM disable info

Useful info. Thank you!