T420 no bios after changing settings

[Trexie]

[b[/b]Hello guys, i have a t420 with 1.46 bios from oleh, i was playing vampire the masquerade when i received a memory management bsod and decided to modify my memory settings, i dont remember much from the memory management screen but i changed something from static to adaptable and from 3gb to nothing in other settings also on that screen. After that i saved the settings and rebooted, but now i dont even get to the thinkpad splash screen, and i stay on a black screen forever, how can i boot back to my os, all lights and the two drives work when i start the computer but nothing else. I have 1333mhz 16GB of ram from sun memory.

Thank you for your help.

[AIX]

I'd try to:

- boot with other memory stick
- reset the BIOS removing BIOS' battery

Here's the HMM:
http://download.lenovo.com/ibmdl/pub/pc ... 0i_hmm.pdf

No-beep symptoms
Table 5. No-beep symptoms
Symptom or error FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no
POST.
1. Make sure that every connector is connected
tightly and correctly.
2. DIMM.
3. System board.
No beep, power-on indicator on, and LCD blank during
POST.
1. Reseat DIMM.
2. System board.

[jaspen-meyer]

Reset BIOS:
1. Remove AC adapter and main battery
2. Remove Bios battery
3. Hold down power button for 20 seconds
4. Connect AC adapter and start computer

[Trexie]

Sorry for the late reply, thank you for your help, i removed the bios battery but i still dont get a post after connecting the pc to a powersource, what else can i do?

[Groovu]

Same thing happened to me. I was messing around with some settings in the modded BIOS and bricked my system. I got 3-1-1-3 for beeps, and just a black screen (no backlight) with LEDs on.

I attempted to recover the BIOS using WINCRISIS (https://www.bios-mods.com/bios-recovery ... -recovery/) to no success.

I ended up buying a new mobo and swapping it out. Kind of a pain and now I'm wary of messing with modded BIOS.

Please let us know if you figure out a way to recover your system.