If your 1.8GHz Duron runs at 1.35GHz you've probably configured the board for 100MHz FSB instead of 133MHz. (200/266MHz effectively)

Have you tried an earlier BIOS from the same site?

It would be an easier job with a floppy drive as it's much less trouble to change the flash program, save the old BIOS, etc. - hopefully you have one you can install.
I'd try an older version of Awardflash, but I'd try Uniflash prior to that.

Doornkaat wrote on 2022-12-08, 19:10:

If your 1.8GHz Duron runs at 1.35GHz you've probably configured the board for 100MHz FSB instead of 133MHz. (200/266MHz effectively)

Have you tried an earlier BIOS from the same site?

There is a jumper cap on JP2, the one for the FSB setting, so it should be running at 133/266MHz.
My RAM is running at 133Mhz as well.
I have not tried an earlier BIOS version yet, would you suggest trying B15 instead of B20?

Edit: It turns out the jumper cap for the CPU FSB speed wasn't seated correctly.
When seated correctly, the computer does not POST.
I assumed it to be an issue with the PSU not having enough watts to power the CPU running at that speed.
I swapped my Logisys 480w (28A 3.3v/36A 5v/16A 12v) for a Hercules 600w (32A 3.3v/50A 5v/24A 12v), but it still won't POST when the FSB is set to 133/266.
I don't know if my cooler could be the issue, this is the one I'm using: https://www.ebay.com/itm/274250433073

Repo Man11 wrote on 2022-12-08, 19:36:

It would be an easier job with a floppy drive as it's much less trouble to change the flash program, save the old BIOS, etc. - hopefully you have one you can install.
I'd try an older version of Awardflash, but I'd try Uniflash prior to that.

My case is too small for a FDD at the moment, even though it has a floppy bay, and I don't have any floppy disks.
I do have a larger period correct case, but I'm too lazy to do a case swap right now.
I'll try uniflash, after I'm able to backup my current BIOS to a floppy.

I tried Uniflash v1.40, and whenever I try to flash the BIOS, with or without bootlock, an error message is displayed which reads, "Error #2: File not found".

When I get to the A: the first thing I do is type DIR - this displays the name of all of the files as they are named on the disk.

You don't need room to install a floppy drive; they work fine sitting on the bottom of the case for temporary use.

Repo Man11 wrote on 2022-12-08, 22:57:

When I get to the A: the first thing I do is type DIR - this displays the name of all of the files as they are named on the disk.

There are 21 files listed they are:
ASPI2DOS.SYS
ASPI4DOS.SYS
ASPI8DOS.SYS
ASPI8U2.SYS
ASPICD.SYS
AUTOEXEC.BAT
BTCDROM.SYS
BTDOSM.SYS
COMMAND.COM
CONFIG.SYS
DRVSPACE.BIN
EBD.CAB
EXTRACT.EXE
FDISK.EXE
FINDRAMD.EXE
FLASHPT.SYS
HIMEM.SYS
OAKCDROM.SYS
RAMDRIVE.SYS
README.TXT
SETRAMD.BAT

I don't know which of those would have anything to do with the BIOS file.

It will show you exactly what the name of the BIOS file is - I've seen BIOS file names get shortened with a tilde (~), presumably because it had too many characters for DOS; if that's the case, you have to type it in with the tilde or you'll get exactly the error you're talking about.

Here, try this. Works great for me, but I used an external flasher.

edit: just looked at my board - it's revision 2.2 - if that helps

One of you ought to take a good photo of your motherboard and send it to the Retro Web.

mockingbird wrote on 2022-12-09, 01:30:

Here, try this. Works great for me, but I used an external flasher.

edit: just looked at my board - it's revision 2.2 - if that helps

Mine is Rev. 2.2 as well, what CPU are you using?
I tried the BIOS file you sent me and I had the same problem.
What did you use to externally flash your BIOS chip?

retroboy87 wrote on 2022-12-09, 03:12:

Mine is Rev. 2.2 as well, what CPU are you using?
I tried the BIOS file you sent me and I had the same problem.
What did you use to externally flash your BIOS chip?

Not sure... I'm gonna go turn the thing on and get a pic...

Done. It's either a mobile Barton or a desktop chip modded to a mobile. Can't remember which.

The underside of the motherboard has its pins modded thusly:

The motherboard has been fully re-capped as well.