help with video bios flashing - Tech Support Forums

JayMan · March 11th, 2002, 09:13 AM

Hey, i just tried to flash my video bios, but it didn't wanna work.

I 1st tested with vgabios as robrich's guide suggested, it went all good, but then when the time came to actually flash the bios i got the following error.

Quote:

WARNING: ROMfile Subsystem ID (0000), doesn't match chip PCI Subsystem ID (7007)

ERROR: PCI Subsystem ID Mismatch.

Doh!

I have followed robrichs guide here http://www.romulus2.com/articles/gui.../nvidbios1.htm

Any idea's how to fix this or why this is happening etc......

Thanks!

JayMan

KenKun · March 11th, 2002, 09:21 AM

I don't have a solution or something .. i just want to say that it is better not to do it ..
You will have no performance increase (negligible if there is any) ..

If things went bad (i hope not), that will coz you a very hard time ... ask someone with a bad flash (ME

) ..

Regards

Dax_Brandy · March 11th, 2002, 09:57 AM

it's like "digging your own grave". flashing (video bios or CMOS) is very risky.

charge to experience. :-)

JayMan · March 12th, 2002, 02:28 AM

i don't see why its so risky, so long as you create a recovery disk, the recovery disk is basically just a boot disk which has a line in the autoexec to run the flash program and flash the bios back to the original bios that ya dump from ya card b4 doing anything else.

JayMan

KenKun · March 12th, 2002, 03:46 AM

I don`t think it`s risky as i think it`s totally unnecessary ... IMO

If the flashing should fix a special issue or problem then go for it ... but flashing your card`s BIOS hoping for performance boost is not right, coz it will not likely happen...

**Sorry Jay for going out of your main topic **

Regards

OuTpaTienT · March 12th, 2002, 03:46 AM

Just be aware J-man, that a recovery disk is not a 100% guarantee that you'll be able to recover.

I would only do a video bios flash under two conditions:

1. If I thought a different bios would make the card more stable in my system. (I wouldn't do it for performance because even at best you're not gonna gain much.)

2. If I had a back up video card that I wouldn't mind using for a short time should the bios flash mess up my main card.

LiLRiceBoi · March 12th, 2002, 04:41 AM

I too was thinking of a flash. But unless I can find one specifically for my card, I'm gonna opt not to do it.

BTW, Jayman, what app did you use for the bios dump??

Hellmund · March 12th, 2002, 05:43 AM

Uh, something I should point out, this is a AGP videocard, if something SHOULD happen he could simply boot with a PCI card into DOS and reflash to his original BIOS on the card...

Also even motherboard bad flashes can be fixed...if your prepared before u flash and a have a recovery disk ready.....BIOS retain even after a flash rudimentry information for PCI/VESA and floppy so they'll work....though not many still have VESA vid-cards an already setup disk with an autoexec means a display is unnecesary

JayMan · March 12th, 2002, 08:46 AM

I used a program called "savebios", since i'm running win2k on this system i had to do everything on bootdisks for win98se (format a:\ /s) which take ya to a dos prompt, and since my drive is ntfs i had to put the apps & bios onto the floppy disk too.

I you want i could email you the apps used, or you can get them from here http://www.x-bios.3dgames.ru/ (altho sometimes that site seems to go down). I also got the latest nvidia reference bios for the gf2 pro from their, which is what i was trying to flash my Hercules Prophet II PRO with. Like i said using vgabios to test worked fine, so herc must have followed the nvidia reference design.

JayMan