Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
Uninhibited dating for men
Last Post: Youcefhakda
Today 10:01 PM
» Replies: 0
» Views: 7
Asus N53SV Unlocked v215
Last Post: Jantheman
Today 03:29 PM
» Replies: 2
» Views: 1394
[REQUEST] Asus eeepc 1025C
Last Post: biospherebios
Yesterday 11:23 PM
» Replies: 89
» Views: 110770
[REQUEST] Lenovo G480 (62CNxxWW) Whiteli...
Last Post: AS7Alexis
Yesterday 10:23 PM
» Replies: 61
» Views: 17735
HP EliteBook 840 g2 NVMe
Last Post: manlopsi
Yesterday 09:07 PM
» Replies: 1
» Views: 177
[REQUEST] Lenovo ThinkPad T30 (2367) Whi...
Last Post: Ibm38729
Yesterday 03:29 PM
» Replies: 0
» Views: 66
[REQUEST] HP ProBook 4535s Whitelist Rem...
Last Post: matxav
Yesterday 01:35 PM
» Replies: 5
» Views: 3447
[HELP] BIOS modding to change soldered R...
Last Post: F-18
Yesterday 12:44 PM
» Replies: 0
» Views: 94
Cannot repair or reset bios Lenovo G500 ...
Last Post: POPKAPOPI2222
Yesterday 12:26 PM
» Replies: 0
» Views: 110
[REQUEST] Unlocked ASUS H81M-E/M52AD/DP_...
Last Post: CertifiedCosmos
Yesterday 08:50 AM
» Replies: 1
» Views: 295
[REQUEST] Lenovo IdeaPad S540 (GPETxxWW)...
Last Post: loginnow
Yesterday 03:39 AM
» Replies: 46
» Views: 16135
[REQUEST] Lenovo IdeaPad U310 & U410 (65...
Last Post: Dudu2002
Yesterday 03:25 AM
» Replies: 1768
» Views: 384336
[REQUEST] Lenovo G500 (78CNxxWW) BIOS Un...
Last Post: Dudu2002
Yesterday 03:20 AM
» Replies: 280
» Views: 125311
Fujitsu Esprimo P5710 - unlock [REQUEST]
Last Post: monkeywrench
05-05-2024 12:30 PM
» Replies: 34
» Views: 774
Lenovo Z50-70: CPU update
Last Post: PedroFX
05-04-2024 07:20 PM
» Replies: 6
» Views: 237
My Gateway NV57h has an ACER in BIOS - c...
Last Post: drmrsolds
05-04-2024 05:42 PM
» Replies: 1
» Views: 2092
Z97-PRO(Wi-Fi ac)/USB 3.1
Last Post: Jedrek
05-04-2024 09:49 AM
» Replies: 4
» Views: 2317
[Request] Acer Aspire 3050 unlocked BIOS
Last Post: prowindows62
05-04-2024 07:43 AM
» Replies: 0
» Views: 166
HP H-IG41-uATX 45nm microcode update LGA...
Last Post: goldenhill
05-04-2024 04:49 AM
» Replies: 58
» Views: 57014
Asus h61m-d & xeon e3-1265l v2
Last Post: DeathBringer
05-03-2024 04:28 PM
» Replies: 3
» Views: 278

Lenovo UEFI NVRAM Nightmare
#1
Hey all, I think I really managed to ruin my new laptop and could use some expertise here

I have a Lenovo U410 Laptop with the latest whitelisted BIOS installed

it has been working fine without any issue until I did the following:

I booted off a USB stick into a UEFI shell prompt (2.0)
that I got here: https://edk2.svn.sourceforge.net/svnroot.../Shell.efi

I was following instructions here on editing my list of UEFI boot items:
https://wiki.archlinux.org/index.php/Uni..._Interface

it was my goal to add my Windows 8 UEFI boot loader onto the list of available options so I could install Windows 8 onto my GPT formatted HD (i have linux already installed and didn't want to convert to msdos partition scheme)

I used the 'bcfg boot dump' command which listed all of my default bios boot options including one annoying one called '\Windows Boot Manager' that was pointing to a no longer existing efi file..

I deleted a few that I would never use, like Lan boot and some others
then added the cdrom-boot.efi file from my USB stick..

Upon Reboot I can no longer access my BIOS via F2 or Fn-F2 or my Boot menu via F12, the system immediatly tries to boot onto USB stick,
And persists until a USB stick is interested it just sits at black screen..
Once a bootable USB is inserted it boots up fine..
I have one with LILO on so I'm able to boot my linux partitions just fine..


I think I broke my BIOS!!
I unplugged the battery and CMOS battery and restarted the machine, but no HELP!! same Issue!!

I even booted a windows PE environment and Re-Flashed the Bios!!
but same problem..
every time i boot into the shell the same 'bcfg boot dump' enteries persist.. I think they are stored somewhere in NVRAM, but I don't really understand how BIOS NVRAM works..

Can someone help me!!
I'm guessing that if i can wipe/format the NVRAM perhaps it will auto fill with default settings?!?!? not sure, I also don't really know how to do that..
I'm scared to wipe the NVRAM and brick my system..

I can boot linux off my USB stick boot still, and tried wiping the /dev/nvram device, this only resets the RTC clock but not the rest of NVRAM..

any help would be great!! I have screen captures and text dumps from UEFI shell also if those help.!!!

Help!!
If I can't get into My bios I'm screwed!! the Bios Reset also broke some other bios default settings that I need to change (ie. Virtualbox no longer works.. among other things)
find
quote


Forum Jump:


Users browsing this thread: 1 Guest(s)