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bad ram VS1GB400C3 - need advice please


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Back on Jan 7, 2006, I bought a replacement motherboard (ABIT KV7-V) and a 1gb stick of ram (VS1GB400C3) to go with it. My old motherboard went bad but my cpu (AMD XP 2100+) was still good, and I'm running it in the KV7-V. I had to buy the DDR ram since the SDRAM from the dead motherboard would not work in the replacement motherboard. I'm running XP Pro and the system has worked perfectly since I did the hardware replacement about 16 months ago. Video card is an ATI 9600PRO AGP with 256MB.

 

Recently I purchased Vista Home Premium (full retail) to run on a 2nd hard drive. Vista will not install. I called MS and they opened a case for my incident. After trying different things the MS tech figured it was a hardware problem, memory or hard drive, that was keeping Vista from installing. There is no other reason why Vista should not run on this PC that they know of. The hard drive tests perfect every time, but not the memory.

 

I first ran the MS memory tester (from a bootable floppy) and it showed that my Corsair memory module has a defect at memory address 01d0d335c and it showed the problem with this address only in numerous tests using the MS test program.

 

After doing this I also tested with the Memtest+ v1.70 tester (also from a bootable floppy) and here's the results:

 

Memtest86+ v1.70 - 4 passes total

WallTime Cached RsvdMem MemMap Cache ECC Test Pass Errors ECC Errs

5:19:43 1023M 84K e820-Std on off Std 4 11 0

 

Tst Pass Failing Address Good Bad Err-Bits Count Chan

4 0 0001d0d335c - 464.1MB 6f305959 6f30d959 00008000 5

5 3 0001d0d3b58 - 464.1MB 20000000 20008000 00008000 1

5 3 0001e0d3b38 - 480.1MB 20000000 20008000 00008000 1

3 4 0001d0d335c - 464.1MB 01010101 01018101 00008000 2

5 4 0001d0d3b58 - 464.1MB 20000000 20008000 00008000 1

5 4 0001e0d3b38 - 480.1MB 20000000 20008000 00008000 1

 

 

The Memtest+ also showed a problem at 2 other (nearby I guess) memory address. 7 of the 11 errors were at 01d0d335c, the same address that showed defective with the MS memory tester. I'm guessing there's one bad chip on the module but that's only a guess.

 

Here is my dilemma: I need the use of this computer. Before I get an RMA, I will first need to buy an additional stick of ram to keep this PC running as I guess it might take a week or more including shipping times to have my VS1GB400C3 repaired or replaced under warranty. I understand that memory should be installed in matched pairs. How should I proceed? Is there anything else I should know? I had planned to get another gig of ram for Vista eventually anyway but I first need defect-free ram to even install it. Apparent XP Pro is much less demanding with ram as it runs fine and is very stable despite the above memory test results.

 

Thanks,

Richard

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Thanks much Ram Guy for your reply.

 

From the BIOS:

 

Soft Menu Setup:

CPU Name Is: AMD Athlon

Model Name: 2100+

 

CPU Operating Speed: CPU default

x - CPU FSB Clock(MHz): 133Mhz

x - Ratio (FSB:AGP:PCI): 4:2:1

- Multiplier Factor: x 13

 

Power Supply: Default

- CPU Core Voltage: +0%

- AGP Voltage: 1.60V

- DDR Voltage: 2.65V

- NB Core Voltage: 2.60V

 

 

Advanced Chipset Features > DRAM Clock/Drive Control

Current FSB Frequency: 133MHz

Current DRAM Frequency: 200MHz

DRAM Clock: By SPD

DRAM Timing Selectable: By SPD

x - CAS Latency Time: 2.5

x - Bank Interleave: Disabled

x - Precharge To Active(Trp): 5T

x - Active To Precharge(Tras): 7T

x - Active To CMD(Trcd): 5T

DRAM Burst Length: 4

DRAM Command Rate: 2T Command

Write Recovery Time: 3T(DDR333)/5T(DDR400)

DDR400 tWTR Timing Control: 2T

DDR DQS Input Delay: Auto

x - Input Delay Value: 18/14(GrayCode)

DDR DQS Output Delay: Auto

x - Output Delay Value: 50/78(GrayCode)

 

 

I have always used the defaults BIOS settings in this computer and it runs very well with XP Pro but won't let me install Vista (install hangs every time) apparently because of the memory problem. From the test results in my original post, would you say that the ram module is defective?

 

Thanks,

Richard

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Thanks Ram Guy, I did as you suggested, setting the memory frequency at 133 MHz, and then I tested with the Memtest86+ v1.70 that I got the other day from the same link as in your last reply. After running not even as long, the results were very similar to what they were in the earlier test with the same 3 addresses failing:

 

Memtest86+ v1.70 - ran 2 passes + 53% of pass 3

ran for 4:13:38 with 9 errors

 

Tst Pass Failing Address Good Bad Err-Bits Count Chan

7 0 0001d0d335c - 464.1MB 92277f62 9227ff62 00008000 1

5 1 0001d0d3b58 - 464.1MB 20000000 20008000 00008000 1

5 1 0001e0d3b38 - 480.1MB 20000000 20008000 00008000 1

3 2 0001d0d335c - 464.1MB 01010101 01018101 00008000 4

5 3 0001d0d3b58 - 464.1MB 20000000 20008000 00008000 1

5 3 0001e0d3b38 - 480.1MB 20000000 20008000 00008000 1

 

I guess this proves that the ram is defective?

 

Thanks,

Richard

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Thanks Ram Guy. Since there's only the one module and I need the continued use of this PC, I've ordered another VS1GB400C3 to keep it going. As soon as I get the new one, hopefully within a day or two, I will do an online RMA for this memory module and get it replaced. I'm also going to test the new one and see if it tests okay.

 

You say in part "No it suggests there is some other problem". I am curious, what other problem could it be other than the ram module?

 

Thanks,

Richard

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  • Corsair Employees
Probably just a Bios setting, this MB and CPU you would need to set the memory Frequency at PC-2100 speed and these modules do not have the SPD information fro that speed grade. You should just load setup defaults and then set the memory voltage to 2.7 Volts and set the memory frequency at 266 MHz and the timings at Cas 2.5-3-3-7 and test it again.
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Thanks Ram Guy for the additional information. I may try what you suggest at some point. I will still most likely get an RMA and have it replaced.

 

The new VS1GB400C3 that I ordered arrived yesterday and I replaced the old one with it and I still can't install Vista. The install starts out fine and eventually hangs every time. I tested the new memory module overnight with memtest86+ v1.70 and there were no errors.

 

I also tried both 1gb modules together and that worked fine in XP Pro, and showed 2gb at bootup and also in XP. Of course I never had any problem with the 16 month old module in XP. At this point I'm thinking that the old memory module had nothing to do with Vista not installing. Hopefully MS can come up with a solution to get Vista installed.

 

Thanks,

Richard

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Ram Guy,

 

I tried many times for a week to install Vista on a 2nd hard drive with this XP drive disconnected and the install would hang up anywhere from 40% to 55% in the 'expanding files' phase and would go no further. I also tried again yesterday to install Vista HP from within XP Pro after copying all the files from the Vista DVD to the 2nd drive for Vista and running Vista setup from the 2nd hard drive and that worked this time. I don't know if the replacement memory made the difference or not. Anyway, I finally have Vista running on this PC in a dual-boot setup and I can't say that I'm particularly impressed with it so far. With some more resource intensive things that I've tested, XP Pro runs them much better on this same PC.

 

Thanks for all your help and I'll do the memory testing as you suggested soon.

 

Thanks,

Richard

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