Bios flash failure! (Asus P5B Deluxe Wifi-AP (LGA 775))

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ImperialGuardsman

ImperialGuardsman

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Sep 22, 2014
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I need your help!

I flashed to the latest bios via EZ Flash on my P5B Deluxe Wifi-AP motherboard and now the system is unusable.

Symptoms: After the initial flash, the bios was verified and the system reset. After post, I received the "Overclocking has failed" alert (since the settings had been changed) and could either go to setup or load defaults and continue. I went into setup, made my normal changes, saved and exited. The machine restarted but there was no post, no error codes, and no picture. Nothing.

I then reset the cmos via removing the battery and using the jumper. After that, I got picture again, post, and then received the normal error message. This time, I said to load defaults and continue and the machine booted into windows. I then told the computer to restart, and I was back to no post and picture. This cycle keeps happening

I have even re-flashed it to the second newest bios with both a known good floppy that had been error checked and a usb jump drive. The same scenario happens every time. I tried to flash to a much older bios (since I noticed that the newest ones were "beta" bioses), but EZ Flash says it is older and will not let me flash to it. I have even tried using one stick of ram

Does this make any sense? What do I need to do? Why does it let me boot once and then fails to post?

Note: The machine had been working fine prior to the flash

Motherboard support page:
https://www.asus.com/us/Motherboards/P5B_DeluxeWiFiAP/HelpDesk_Download/

Thank you for any help you offer!
 
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MeanMachine41

MeanMachine41

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May 8, 2014
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As they say. Do not flash your Bios if your system is stable as you take a risk.
It is best to clear your CMOS prior to updating and after.

If indeed your Bios is corrupted and this keeps happening and your sure the flash has been done successfully, then you will have to have your MB bios replaced.
Some Bios chips are available and can be sourced on ebay and a simple process to replace the chip, however I don't think this is possible with your MB. Check with ASUS support but I think you will have to send the Board in.
Unfortunately I have read somewhere that the BIOS is integrated into the southbridge with this particular board.
 
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ImperialGuardsman

ImperialGuardsman

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Sep 22, 2014
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I have traditionally been a proponent of the "never flash" position, but it seemed like everyone else found that to be an outdated position. Looks like tradition was right again this time.

Is there any chance that flashing from a DOS environment might work? I don't know how to do it, but I can boot once every time I clear the cmos.
 
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ImperialGuardsman

ImperialGuardsman

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Sep 22, 2014
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Quick update: Flashed via DOS and the AUFDOS utility, no difference. I have ordered a duplicate of this board, but would still like to fix it if someone has a solution that has not been tried yet. Otherwise, I'll ship it to ASUS (if they will even take it, as it is rather old) after the rplacement is here and tested.
 
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MeanMachine41

MeanMachine41

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May 8, 2014
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Quote: Is there any chance that flashing from a DOS environment might work? I don't know how to do it, but I can boot once every time I clear the cmos.

It is worth giving it a try ImperialGuardsman and you might get lucky.

1. Prepare the motherboard Support DVD and an empty USB flash drive in FAT32/16 format.
2. Download the latest BIOS file and BIOS Updater from ASUS website and save them on the USB flash drive.
3. Power down your system and disconnect all SATA HDD
4. Insert the USB containing latest BIOS file and BIOS Updater to USB port.
5. Power up and go to your Bios.
6. Select your DVD as the boot device. If a boot device screen appears when next you boot, choose your DVD and mount your support installation disk.
7. When the booting message appears, enter FreeDOS prompt.
8. At the DOS prompt, change directory to your USB drive.
9. Type in "bupdater /pc /g" without quotation marks.
10. At the Bios update screen, select the Bios file on the USB and press enter.

I hope it works for you.
 
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ImperialGuardsman

ImperialGuardsman

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Sep 22, 2014
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Thanks, though I already tried a DOS flash (see above post). I did it the more old fashioned way (because real computers have floppy drives), and it appeared to take at first (like all of these flashes have) but exhibited the same symptoms. That is, one good boot for every cmos clear. Very strange.

 
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ImperialGuardsman

ImperialGuardsman

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Sep 22, 2014
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Alright, this is an update!

The new replacement board came in today and, after installing it in the case, I began to have the EXACT SAME PROBLEM. One good boot, and then nothing. Since I had nothing but a floppy connected and one stick of good RAM, I decided to try something different: I switched out the CPU (Extreme Edition 965 for a Pentium D 820) and now it works! My old board might have been perfectly fine but it seems that my CPU somehow decided to die or get buggy right when I did my bios update. Very strange. The CPU had always been a little warm, but considering the heat output and the temperature of the room it was understandable (and well within safe limits). Very strange. I'll order another Extreme Edition soon after I complete the system and ensure that everything else is okay.
 
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