hi; first post from france...
i have repair at this time 2 lenovo thinkpad edge e520 1143-8ng (dc: 11/11)
the twice freezed during the loading of W7 whith only the mouse onto a black screen.
-i have upgrade the bios with bootable cd.
-dump the old chip and copy it to a new one:
mxic 25l3206em2i-12g
3l299300
k130576 => dc: 13/05
-next enter in the bios "Startup\UEFI/legacy Boot" => legacy only
-and finally make a fresh install of W7
woks well for 2 weeks stress test long
bios dump file:
uefi bios version: 8HET43WW (1.25)
2013-03-01
embedded contrller version: 8HHT31WW (1.13)
http://dl.free.fr/nnw3nAS40Вложение:
mxic_OK.bin
i have soldred this chip with this dump on a 3rd laptop wich don't want to start at all (no led, no reaction)
now, there is only the green led near the dc jack and it don't want to start no more.
=> probably there is serial number protect (mac adress or other thing)
i will search for a solution to transfert this ok dump to another laptop, by pasting some code from original dump of the 3rd laptop to this accessible to download (2 links) dump.
i have so many laptop of this model to repair and i am active to find a repeatable bios repair solution for this model of laptop.
i hope i have help somebody.