Got an Acer Aspire 4520 that has the latest bios update (3632) and ever since it was updated, it crashes without warning or error. Just either a blank white screen or a stripped snow like screen. It seemed to work fine before the update, but i ran it in hopes it would run better with an updated processor. But it didn't and now i'm trying to return it to the factory bios or a modded one for better results. Anyone have any suggestions?