Divide by 0 or overflow error duing clean install of Win 95

[TangleWeb]

I am attempting to install Windows 95 ver 950B on an AST Adventure 4066D. This machine is based on the AMD 486DX-2 66 MHz chip, has 32 MB EDO RAM & 1 GB Hard Drive. No Secondary Cache.

I have FDISK'd & Formatted clean 3 times. I get through the setup wizard, but when it begins to copy files, I get the Divide by 0, or Overflow error message. I find no direct reference to it when I search MS Knowledge Base.

I could sure use some help on this one! I'm going to try 98 just for comparison.

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Dave

[TangleWeb]

Additional info. I FDISK'd and formatted again and tried Windows 98. Got same error message.

"System Error
Divide by Zero or Overflow Error"

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Dave

[TangleWeb]

OOPS!

Sorry, it has a "CYRIX" 486DX-2 66 MHz chip, NOT AMD...

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Dave

[bdunn]

I've seen this before. try running setup from the command line and turn off all the options /is /iq ...etc.

It should help

[TangleWeb]

BDunn

Thanks for reply! I am running install from the prompt, as it's a clean install. Please list syntax to turn off all options.

I copied entire contents of Win95 Dir. to C:\Windows\Cabs, then CD to C:\windows\cabs & typed "setup"

I have heard that bad memory can cause this also. Comments?

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Dave

[Darren Wilson]

if your BIOS has the option, disable the maths co-processor as this can cause this problem on the Cyrix 486. Also worth a shot is disabling the cache , both onchip and onboard. This worked for me on AMD DX4-100 chips.

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why are our jobs so interesting??????

[TangleWeb]

Thanks to all that responded to my post!

I wanted to post the resolution for the benefit of others who may experience the same problem.

The 486DX2-66 MHz AST Computer required 70 Nanosecond (ns) Fast Page Mode, non-parity, 72-pin SIMM's. Usually computers that specify 70 ns FPM RAM will work fine with 60 ns FPR. Usually, as long as the memory is faster than the specified value, you're OK.

I this case there was 4 MB of "integrated" 70 ns FPR on the MoBo. The designers, in their infinite wisdom, did not make provision on the MoBo for a jumper to disable the on-board RAM. Because of this, 60 ns RAM would NOT work. It did recognize it in the CMOS Set Up, it counted up normally, but during Windows setup (95 or 98) the above error message displayed and setup failed.


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Dave