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bad memory module


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10 replies to this topic

#1 infinity92

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Posted 13 July 2009 - 01:17 AM

i recently bought a kingston ddr400 ram in a famous computer store here in the Philippines. they tested it there and it works. when i got home, i immediately put it inside my pc. it can be read by my motherboard and it works properly except most of the programs i use are randomly crashing. i tested it using memtest86+ and after 16mins of testing, a problem about the memory appeared. Memtest listed the problem specs like the memory address and the bad and good patterns. I went back to the store to ask for a replacement. When they tested it using an older version of memtest, my memory passed the test and in their pc, there is no program crashing so i didn't have the replacement. When i got home, it still has the problem.

Can you give an advice on how can i prove to them that the memory has a problem? I already tried using the programs i use at home but it doesn't crash in their pc. I don't want to carry my pc all the way there so i want to test the memory using their pc only. Or can you give me just ways to fix this memory?

Help would be very much appreciated. Thank you.

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#2 techextreme

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Posted 13 July 2009 - 02:39 AM

I would suggest running Memtest86 on your existing ram only and see if the problems are your existing ram. I would also try removing your existing ram and installing just the new ram and run your programs and see if the crashes still appear.

You may have some inconsistencies between your existing ram and your new ram. One may be ddr266 and your new is ddr400. I would not recommend a speed difference that high.

Hope this helps,
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#3 infinity92

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Posted 13 July 2009 - 07:16 AM

i already tried removing that ddr400 ram and replacing with my older 512gb ddr333 and the crashing stopped. i also tried performing memtest on only the ddr400 but the problem's still there and the crashes also.

#4 hamluis

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Posted 13 July 2009 - 11:41 AM

Older versions of Memtest are unreliable, see Known Problems under http://en.wikipedia.org/wiki/Memtest

Memtest86+ is the version which I would consider reliable.

Any testing done with a prior version...would be suspect, IMO.

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#5 case.bolt

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Posted 13 July 2009 - 12:42 PM

it's odd that a "famous" tech store would not be using the newest version of memtest in the first place... i'd go break some heads at the store and tell them they need to update their software if they expect to not give you a refund/replacement for a bad memory module. sounds like lazy techs at that store...

#6 DaChew

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Posted 13 July 2009 - 01:09 PM

It's better to investigate a little deeper, memory may not be set right by bios, some cas 3 400 ddr won't run at cas 2.5 and 333, is just one example.

The kingston ram will have a spd table and a program like Everest home free should tell you the differences

CPU Speed:
CPU Clock 2250.00 MHz
CPU Multiplier 9.0x
CPU FSB 250.00 MHz (original: 200 MHz, overclock: 25%)
Memory Bus 250.00 MHz

CPU Cache:
L1 Code Cache 64 KB (Parity)
L1 Data Cache 64 KB (ECC)
L2 Cache 512 KB (On-Die, ECC, Full-Speed)

Motherboard Properties:
Motherboard ID 63-1408-000001-00101111-063005-K8T800P$A0036001_BIOS DATE: 06/30/05 17:34:14 VER: 08.00.09
Motherboard Name Asus A8V Deluxe (5 PCI, 1 AGP, 4 DDR DIMM, Audio, Gigabit LAN, IEEE-1394)

Chipset Properties:
Motherboard Chipset VIA K8T800Pro, AMD Hammer
Memory Timings 2.5-4-4-10 (CL-RCD-RP-RAS)
Command Rate (CR) 1T


SPD Memory Modules:
DIMM1: Micron Tech. 256 MB PC4000 DDR SDRAM (2.5-4-4-10 @ 250 MHz) (2.0-3-3-8 @ 200 MHz)
DIMM2: Micron Tech. 256 MB PC4000 DDR SDRAM (2.5-4-4-10 @ 250 MHz) (2.0-3-3-8 @ 200 MHz)


Edited by DaChew, 13 July 2009 - 01:10 PM.

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#7 fairjoeblue

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Posted 13 July 2009 - 01:37 PM

Did you nplug the computer before installing the memory stick ?

A mistake many make is thinking there is no power going to the motherboard if the computer is turned off so they don't unplug the power cord.
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#8 infinity92

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Posted 14 July 2009 - 01:30 AM

i always unplug the power cord before installing new hardware.

#9 infinity92

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Posted 14 July 2009 - 01:34 AM

i also used memtest 86+ but the store used memtest-86 v3.4. does this make a big difference?

#10 starcraftmaster

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Posted 14 July 2009 - 01:45 AM

go to the store and give them a copy of the new version of memtest.
and if it goes wrong there then they should give the money back.
if they dont then just tell them your not gonna buy any thing from them never again and you expect beter and do some more blah blah blah and do it that for 3 minutes lol :thumbsup:

#11 infinity92

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Posted 16 July 2009 - 09:15 PM

now also my old RAM crashes but only when using javascript. can it be my motherboard already?




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