Common error message... but tricky!

April 5, 2009 at 05:59:30
Specs: Windows 95
Hi folks.

I recently acquired a laptop off my Uncle,
which I intend to turn into a DOS/early
Windows gaming machine. Its specs are as

Bus Architecture - USB/PCMCIA
Hard Drive Bus - Ultra ATA/100
CPU - 2.5GHz Intel Mobile Celeron

400MHz FSB, Intel 845GV + ICH4 Chipset

Through trial and error I managed to install
Win95 on it, but every time the laptop
attempts to boot into the OS I get the following

"Windows protection error. You need to restart

So in short, I cannot launch Win95. What I
can do, however, is break in with Safe Mode.

I have done quite some research on this error
message and although most answers all point
to a hardware fault of some caliber (which I
), the most likely problem is that Win95
cannot be fully installed on systems with a
CPU clock higher than 350mhz - something I
have only just found out.

AMD issued a downloadable fix for this
problem, that apparently works for any CPU,
AMD or not. I downloaded the fix and copied
across all the necessary files to the respective
folders in Windows\System as instructed, but
the problem still persists.

I understand that underclocking the CPU is an
option, but I am new to this area of tinkering.
The notebook's BIOS makes no mention of
CPU settings, either, so I'm a little stumped as
to what to do next.

Any suggestions?

Thanks in advance for any help.

- Jonathan.

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April 5, 2009 at 08:15:17
The 350MHz barrier is in regards to AMD K6-2 CPUs only. You have an Intel CPU. Why are you even bothering with Win95? Win98SE would be a much better choice.

Regardless, how much memory do you have? Make sure it's less than 512MB.

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April 5, 2009 at 09:14:07
Thanks for the quick response!

I am partial to Win95 because I have always found it had the
best compatibility with DOS games. I recall migrating from
Win95 to Win98 on an old desktop computer, and with the
change came a myriad of sound problems The most common
one was that my games no longer had music, only sound
effects - bloody annoying and I tried everything to rectify it.

Can't believe I didn't mention the memory! My laptop has
256MB of RAM, so bearing in mind what you said, this looks
a safe figure.

Thanks for the help so far.

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April 5, 2009 at 12:47:55
I too found a reference that the AMD update works for faster Intel processors:

(from the Md Asique question about half way down the page)

I don't know that that's true but I guess it wouldn't hurt to try. As far as getting it installed when the computer won't boot up, there's some info here:

Please post back and let us know if the update does work.

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Related Solutions

April 5, 2009 at 16:01:53
Hi Dave. Thanks for the response!

I applied the update manually in MS-DOS, as I found that I
could no longer boot the PC in Safe Mode (having done a
clean HD format and Win95 install, just in case it was "one of
those things") without the dreaded aforementioned error
message appearing.

The update has rectified that, however, and I can now enter
Win95 in Safe Mode. So I'm kind of back where I started, but I
know that the update has helped me get into Windows at
least... surely a good thing.

I have checked out of bootlog.txt and the first thing to fail is
the font Marlett, which gives an error code of 0016. This
seems to be the root of my problem. I have tried to copy
across the font file from my Win95 CD to the Fonts directory
in my Windows folder through DOS, but I get an "Access
Denied" error regarding the Fonts folder.

The mystery deepens!

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April 5, 2009 at 16:46:38
"and with the change came a myriad of sound problems "

You think you are going to find 95, sound drivers for that laptop?
Or any other drivers?


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April 5, 2009 at 18:33:23
Most likely it is driver incompatibility issues as it runs with basic minimal drivers in Safe Mode.

You might find what is preventing it going into normal Windows by unticking things in msconfig.

There are bound to be errors showing in Device Manager, although they might still help give you some clues to work on.

some other bloke...

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April 5, 2009 at 18:43:37
does 95 have msconfig?


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April 5, 2009 at 23:04:16
No but the msconfig files from 98 will work with 95.

I'm not sure if it's starting in safe mode on it's own but here's a lot of discussion on that:

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April 6, 2009 at 05:47:05
I'm betting it's the Ultra ATA/100 drive controller and the lack of bus mastering in "out of the box" 95 that is at the real root of the problem.

Font failure was common enough to me in my early days with 98se and non-bus mastered hard drives too. Some coincidence. Faulty access to hard drives results in fouled files, how unusual.

Are we talking at least 95B? If so please see this:

Put the two fixed files in your installation folder and they will be used instead of the compressed ones inside file. Next time you install 95, it will install your IDE drives with DMA active as soon as possible (1st reboot) and disk errors should be non-existant at that point on.

Just hope you are installing Windows from the hard drive so this substituted inf file technique can work for you.


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April 6, 2009 at 08:24:06
Apologies for my msconfig boob - yeah W98 onwards.

some other bloke...

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April 9, 2009 at 21:32:45
I forgot about this:

But I'll bet installing it will do the trick. The file name is 312108USA8.EXE. You should be able to google it to find a download since microsoft has dropped support for 9X. If not I can email it to you.

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