I've got a Lenovo G555 - 2gb - AMD M320 cpu - HD4200 gfx - 500gb and was wondering if there were any savvy owners (unlike me) who figured out how to backup their BIOS before upgrading it. I upgraded the BIOS, and crashes became unbearable, recovery attempts fail with blue screen or justs hangs after progress bar in the beginning. I even tried installing fresh with new windows 7 disks which also failed, either blue screen during start. The funny thing is hirens windows mini-xp works without a problem, and can run memory diagnostics all night (no problems reported, by the way)
I believe it may be because it doesn't load drivers and/or rely on advance hardware features that normal operating systems check for. I must add even linux fails soon after/during checking of PCI features since you can see linux boot process in text form.
Sorry to throw out a lot of assumptions but if anyone does have a copy of the BIOS before the one listed on Lenovo website it would be worth trying. (can I even flash in windows in a windows live CD?)
Thanks for any technical advise,
(I did phone lenovo tech support who were friendly enough but said older BIOS versions are not available)
# Sent the computer back under warranty and they replaced the processor.
# Everything has been working has normal since then.