• Possible to fix corrupt bios of Asus G74SX without sending it in?
    6 replies, posted
Hi all! Long story short, smart drunk guy flashed the wrong bios, bios is now corrupt. If I can fix it for him I can get the trackpad cable from that laptop, which I really need for my own G74SX! So is it possible to do so please?
Probably not, you should contact Asus about it.
It may be possible to do a forced BIOS update by naming a file a certain way, plonking it on a USB drive and pressing a certain key combination on starting. I will have a look for you. [editline]4th April 2013[/editline] OK, try removing the battery and power, pressing the power button for 5 seconds, reinserting battery and power, and hold CTRL+Home and press the power button to turn it on as usual and see what happens.
If the motherboard has a socketed BIOS chip, you can hot-flash it in another motherboard. if it doesn't, you'll have to send it in or get an expensive EEPROM programmer.
[QUOTE=bohb;40178420]If the motherboard has a socketed BIOS chip, you can hot-flash it in another motherboard. if it doesn't, you'll have to send it in or get an expensive EEPROM programmer.[/QUOTE] Not entirely true; some machines have a method to recover from a bad flash. I can't find much more about how to do it with the Asus but on my HP mini 311 I could do it by naming the file a certain way, putting it on a USB stick and booting up whilst holding Win+B. I have no idea how it works but I know I have it on my Clevo too (although fortunately I've never had to use it).
Some desktop motherboards have a backup bios but I dunno about laptops. Best bet is to read the motherboard manual.
[QUOTE=rhx123;40181977]Not entirely true; some machines have a method to recover from a bad flash. I can't find much more about how to do it with the Asus but on my HP mini 311 I could do it by naming the file a certain way, putting it on a USB stick and booting up whilst holding Win+B. I have no idea how it works but I know I have it on my Clevo too (although fortunately I've never had to use it).[/QUOTE] The BIOS recovery function is stored on the same EEPROM that the BIOS is written on. Nearly all modern BIOSes are stored on the EEPROM compressed and have a tiny loader starting at 0x0000 that decompresses the BIOS image and also contains the boot block recovery feature. The recovery feature is only designed to recover from failed BIOS flashes when using a correct BIOS image, not an image for a different motherboard. When you flash a wrong BIOS image, it destroys the boot block area with the loader and recovery feature and replaces it with a version incompatible with the motherboard, therefore the recovery option will never work and you're stuck with a brick. [QUOTE=Metalcastr;40187182]Some desktop motherboards have a backup bios but I dunno about laptops. Best bet is to read the motherboard manual.[/QUOTE] Most motherboards with dual BIOS images are designed to recover from bad settings changes or to have multiple BIOS versions. They aren't generally designed to recover from incorrect BIOS images being flashed.
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