Tomay, check ur pm, I've give u an acer aspire 4540 backup file, hope it can help u, n don't give up man!
Thank you for the Buckup. But unfortunately yours is empty from DMI info (because it is 1 MB). New Insyde BIOSes with 2 MB are concerned. N/B : With an Hex Editor search for : "$DMI" string. just afer that string dmi info should be there.