In Everest you looked under Motherboard-ACPI? It's unusual for SLIC not to appear with ISA mod, but the bios can be modded lots of ways, so if ISA doesn't work we can try a different method. (Too late for me tonite, but I'm sure someone will have another one for you to try soon!)
Excuse me I have an Acer Aspire 6930G-643G25Mn and I search Winflash for Vista x64 I can't find latest version of WinPhlash64 I search this version because I want to backup my Bios, and do a request for modded Bios. Thanks.