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Cannot read memory errors


briank2

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I started out fine building the system shown in my signature about 2 weeks ago. I ran memtest86 each night for several nights with no errors. That was using stock SPD timings. I then switched over to 2.5-3-3-6 and again ran memtest86 without error overnight. Everything ran very clean and fast. I ran superPi 1M in 46 seconds! This all on stock cooling (temps all below 55C).

 

Last night, I was getting an XP pop-up saying it could not read memory at address xxxxx, and either blue screen or kill the active program. It did this a few times. I gave up for the night and powered off the system. It did this a few times before yesterday, but I chalked it up as a bug in HL2, and didn't relate it to possible bad memory. This morning I tried starting the system and it complained about HAL.DLL being corrupt. At first, it sounded like the hard drive was corrupted. But the memory errors stuck in my mind.

 

I ran memtest86 and received hundreds of errors in tests 3, 4, and 5 consistently. The memory locations always ended in 4664, scattered throughout the 512MB range. It always occured on bit 00400000 or bit 00800000 of the test. I moved the memory into the other banks, and received similar errors (except the last four digits were always 399c). I received these errors with 3-3-3-8 timings.

 

I already filled out the RMA form with NewEgg and shipped the memory stick off for replacement, so I can't test anything at the moment (sorry, but I wanted to get it running by Christmas). After looking through this forum, I just wanted confirmation that it is a bad stick and not something else (like a bad CPU/MB?). Funny how it ran flawlessly for a few weeks and then consistently is now giving errors.

 

The only things I didn't try were to manually set the memory voltage or reduce the FSB speed. Both were set to Auto in the BIOS. After I shipped it, I looked for several hours in these forums and did not find any reference to this motherboard/memory combination having issues like I experienced.

 

Thanks for listening!

 

-Brian

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I understand there are many factors. So let me ask a different question...

 

Should I expect to be able to run flawlessly at 2.5-3-3-6 at 2.75/2.8V @ 200MHz with this motherboard/CPU? Are the majority of people who have this combination working fine? I know there are always recommendations to slow things down to make it work, but as others pointed out, that's not why I bought XMS memory. I bought Corsair because they seem to be the best, and I figured I could build this system, run it at manufacturer specs, and it would be extremely stable. I'm certainly going to try again with Corsair, since there can be a bad piece of hardware even for the best makers. Is there anything I should do when I get the replacement stick, besides running memtest86 for a while?

 

Unfortunately I dont have another newer/high end system to try swapping part with. I'm upgrading from a P3 1GHz...

 

BTW, I haven't ruled out that it's the CPU or MB. If I get very similar errors on the same memory locations when I get the replacement part, there could be a bad etch on the MB or CPU problem.

 

Thanks!

 

-Brian

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Well, at least I have some confirmation that HL2 would generate those memory read errors. For those who may come across this thread here, look at:

 

http://www.steampowered.com/forums/showthread.php?threadid=207065&perpage=15&pagenumber=1

 

This still doesn't account for the consistent memtest86 errors, the similar errors when I never started HL2, and the HAL.DLL corruption message. I'll post more when I get the replacement RAM and test it out.

 

Can anyone tell me if all the errors having the same last 4 digits in the memory address, and the problem being specific bits not getting set to 1, would indicate a problem with a chip/pin on the memory stick? I'm not a memory guru by any means, but isn't memory banked/addressed in some way to make this plausible?

 

-Brian

 

P.S. Could HL2 have killed my RAM??? I didn't have any problems until I loaded it and started playing. I played FarCry for days before I tried HL2, so I was stressing the system prior to HL2. I didn't get the memory read error in FC, just when I powered up my system to surf the Internet.

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  • 2 weeks later...

I received a new stick last Thursday. I ran it with memtest86 using 2.5-3-3-6 at 2.75V for 77 full passes without a single error. It also ran SuperPi 1M in 40 seconds! I ran prime95 overnight and it also had zero errors. The system seems very stable and I have not had a single glitch.

 

BTW, it's in slot 1. I only have a single stick. Should I leave it at 2.75 or reduce it down to 2.7?

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