H'mm, I'll have a look when I'm taking the chip out to send back - the
seller does sound like he's going to play the game - but I think as it
caused error beeps in slot #1 and #2 - didn't try three - and as the
original chip works in #1 the chip seems more logically the gremlin.

I've got a can of compressed air, but I'm wary of it. Sometimes a
damp kind of spray will come from it. I see you're supposed to be
able to clean laptop keybaords with it too, but it seems a risk if the
spray has a wet moment.

A ps2 model 90 - would that be a classic green text on black screen
look - I'd be quite happy if they'd never evolved beyond that....

L

On Dec 3, 2:29*am, "William R. Walsh"
m wrote:
Hi!

Cheers. *I did manage to get a Cd burnt of Memtest 86 but I stopped
the test at 1 hr 52 minutes (with no errors and 'one pass') before I
saw your reply, so I'll put it on again tomorrow for longer.

Fair enough. Memtest pushes the memory pretty hard, so one pass usually
finds all but the most elusive and uncommon faults. Several hours worth of
runtime "keeps the heat on" so to speak and will expose even slightly weak
locations in memory or faulty hardware.

By the way, to clarify, I put the chips back as they were after
testing the Infineon alone, and there are no beeps to put up with like
this - it seems sort of weird that it's stopped doing that even though
the troubling chip is still present.

Well, here's a thought. How clean is the system unit? If it is dusty inside,
take the time to clean it out. I recommend a source of moderately
pressurized, *clean* and *dry* air. A well maintained air compressor works
(and is what I use). If you can't find one of those to borrow/use, cans of
difluoroethane gas are sold as "air dusters" in many stores. Even a hardware
store may have some. They are not all that cheap.

I ask about the cleanliness of the system because of an experience I once
had with another computer. In that case, the computer was an IBM Personal
System/2 Model 90. I was building it up with memory and a faster processor
card when it started throwing up memory errors. Each one was reported to be
from the same SIMM socket. I swapped SIMMs like crazy, but it made no
difference. That one slot was "bad" as far as the computer was concerned. I
put the original processor back in--the errors went away. Whenever I put the
faster card back in, the errors came right back. The card tested good in
another system, as did the memory.

Finally I got mad and I took the whole mess out to the garage, where I
inspected it under bright light. And I found a chunk of dust wedged in a
slot. (I think it was the processor card slot...if memory (heh-heh) serves.)
Blowing out the system unit solved the problem. It ran reliably for years
after that, until a basement flood ate it.

Perhaps your Deskpro had a similar problem or maybe there was a bad point of
contact somewhere in the DIMM or its socket.

William