STOP:0x0000007E after installing RAM upgrade

[Kiwisnag]

Any help appreciated please! I've searched but cannot find a specific answer.

I replaced the RAM with 2 new (good, tested) 512MB PC133 SD RAM modules on
my generic PC, DFI AM75-TC mobo, AMD AthlonXP 2600+ CPU running XP Pro SP2
which was running perfectly, until I upgraded the RAM from 256MB to 1GB.

After RAM replacement, I received Blue Screen STOP error on boot up
STOP:0x0000007E (0xC0000005, 0xF67FA52E, 0xF7966C60, 0xF796695C)

Attempting to start in safe mode results in machine hanging at
multi(0)disk(0)rdisk(0)partition91)\WINDOWS\System32\Drivers\Mup.sys

Thanks

 

[Andrew E.]

Some pcs wont run on single-sided ram chip memory,only dual-sided.Or,
some wont allow the combination of the two.Either way,how or who tested
them.Try downloading microsoft memory tester,install to a MS-DOS formatted
floppy (a cd version may exist also),boot pc to either & run.Locate file at:
http://oca.microsoft.com/en/windiag.asp

 

[Kiwisnag]

Thanks Andrew, but my 2 new 512MB RAM modules are identical doubled-sided
chip modules. Neither am i combining single or double sided. A computer
technician tested the new memory "good"using the memtest386 utility.

Current status is that Windows XP Pro will not start up, not even in Safe
Mode. If I use another old drive (with Win Me as the OS) machine starts fine.

 

[nass]

What happen if you put back the old RAM?.
If it did work then your type of RAM not compatible with your motherboard or
the CPU doesn't know how to handle the new RAM, which my not the case.
If your MOBO this one INFINITY CFX3200-M2/G Motherboard which you stated
then it does support DDR2-800 Memory!.
If the specs okay and all fine with the new RAM stick try to run a test on
the HDD and disconnect all attached Peripherals from the machine and start
just with Mouse, monitor and Keyboard.
Or repair/install is your next Option, make sure all your data are backed
up?.
HTH.
nass

 

[Kiwisnag]

Thanks nass

If the old RAM is reinstalled with the same HDD the same error re-occurs.
If the HDD is substituted with another working HDD & with the new RAM the
machine boots up & Windows on the substituted HDD works fine.

It therefore seems to me this all points to the original issue having caused
a Windows problem on the original HDD which is where the problem resides.
If only I could find out what the FULL error message is pointing to!!

The mobo is not what you state- I repeat it is a DFI AM75-TC which has a
maximum FSB of 266MHz. It uses PC133 168pin SD RAM - NOT DDR RAM. The CPU is
an AthlonXP 2600+ (Thoroughbred core 266MHz NOT Barton 333MHz)

I'll try your suggestion of stripping the PC down to the bare bones & report
back.
Thanks for your suggestions.

 

[nass]

So, it the Hard Drive is at Fault, try to run the diagnostic tools on the
HDD and test its health, if it pass then try a clean install on but after
backing up your Data.
HTH.
nass

 

[Kiwisnag]

Thanks nass
Yes it is an HDD problem caused who-knows-how at the time of the RAM
upgrade, as I stated. The HDD passes check disk test OK. Windows corruption
(hence the STOP message) is the current problem.
I had hoped that someone could advise what the FULL stop message was
specifically pointing to.

Looking like I may have to back up data, then do clean install but it is so
time consuming I'd hoped to avoid this as did so less than 6months ago when
the HDD was new.

Thanks again

 

[nass]

How to Recover from a Corrupted Registry -config-system:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q307545

http://support.microsoft.com/kb/906866
<Quote::>
The Mup.sys driver handles Distributed File System (DFS) file I/O requests.
If there are four or more file system filter drivers, the I/O request packet
(IRP) location buffer that is pre-allocated by Mup.sys will overflow.
</Quote::>
If you have a PCI Cards try to take them out one-by-one and start the PC
after each one and see if you can Boot up?.
It could be a Network Card or Graphic card causing this issue!.
HTH.
nass