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New Chip and Motherboard Problem

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9 replies

by rel blackmane

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Just bought an Asus TUV4X mobo' and a Pentium III 1.2 GHz processor as an upgrade.
Put them in my existing system, 40GB HD, Geforce2 MX400 video, 768 MB SDRAM, and fired 'er up.
No problems, temperature is just right.
I go ahead and install XP Pro and driver updates, etc. NO problems.
Then I decide to flash the BIOS to latest version.
Immediately after the flash, and loading setup defaults, I exit, and upon restarting, it won't post or give me video.
Shutting down, turning back on let me get back to setup but now the chip will only run at 600MHZ.
Went back to old BIOS ver. did nothing to help.
HELP.

9 replies

by thechas

When you flash the BIOS, you need to reset the CMOS memory.

Just accepting the default settings will not correct everything.

I diodn't check on your motherboard specifically.
Usually there is a jumper that you set.
Then boot up.
Shut down.Return the jumper to normal settings.

What happens is that the memory location where settings are stored can change with a new version of the BIOS.
If the old settings are not FULLY cleared, the BIOS gets confused and does not operate properly.
How did you flash the BIOS?
I hope you booted from a TRUE DOS boot floppy, and ran the DOS version of the flash software.
I have not had any luck with the Windows based BIOS update programs.

Chas

by rel blackmane

Liked your answer, but I did use DOS boot disk and cleared CMOS to no effect. Used dos AFlash from ASUS. I know it's the right one, but thanks anyway. One thing I did notice after flashing, the comp didn't give me CMOS error and ask me to run setup.

by dmiles

Try checking the manufacrturers site to make sure that you flashed the correct bios update,sounds like a bad bios flash

Did you stop the flash while it was running?

Try to recover from the bios update see
www.badflash.com

Boot into CMOS configuration and see if you can manually reset the processor speed

by cg it

yeah, when you flash a BIOS, it clears all CMOS values. Note: You should have gotten a CMOS error and a message saying press F2 to setup when you first booted up after the flash. Your 1.2 GHZ FSB setting is probably at the default [which is why it'srunning slower than the stated cpu speed]. Rule of thumb with BIOS's [if it works, don't flash it. Only do so if there's a problem [like HDD support or CPU support]. Most mFG's don't take mobo's on warranty return if the BIOS was flashed and there was a problem with the flashing.

by rel blackmane

I hear you man. I'm A+ certified and figured to get the latest greatest. The flash is correct and from ASUS with true DOS boot disk, however, I don't get CMOS error after full shutdown and startup. Any ideas? I even pulled the battery and setup from scratch.

by crowngreen

I agree with the others but as its a new motherboard my premise is the old one that if its not broke dont fix it.

I have found this to my cost in the past.
Good luck

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