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I recently purchased 2 sticks of 512 MB DDR 400 RAM ( LOT #0448014-0) from newegg.


However the RAM has been very unstable. There have been numerous times when I'd be playing a game and it randomly exits because of an error. The same has happened when I browse the Internet. I also get a lot of blue screen errors, like Bad_Pool_Caller and such. I am sure it is a memory problem because all the errors mention memory in the titles. Also, today there was a major error where the BIOS downgraded the system memory. Now I only have 226 MB of RAM. After restarting it went back to 1 GB. In addition, the speed of the 1 Gb ram has been reallly slow, even slower than when I had 256 MB of RAM! Please help.



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The part# for this should be VS512MB400 is that right? And can you tell me the make and model of MB you have along with the CPU speed and it’s FSB as well? In addition, please tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set?
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Yep the Ram sticks are VS512MB400.


My motherboard was manufactured by Dell Computer Corp. The model is 0W2562. The chipset is an Intel i875P Rev. A2.


The CPU is an Intel Pentium 4 HT 3.00 GHz.

The FSB is at 200 MHz. The bus speed is at 800 MHz.


I switched my memory sticks so now I'm using the previous Ram I had before using the Corsair ones.


Upon looking at my BIOS ( which is a Phoenix ROM BIOS PLUS Version 1.10 A04), the Level 2 Cache is 1 MB Integrated. The CPU speed is at normal. The processor 0 ID is F33 with a Cache size of 1024 KB. I'm sure I haven't made any performance settings through the BIOS.

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  • 2 weeks later...

Ok, I just did a Memtest. Both of the modules had errors.

One had some like this:

Tests: 4,8,6 ... Pass: 1,4,12... Failing Address:0001af3113c, 0001d1ab518, 0001af3173c... Bad: 7e4oabf1, ffdfffff, 00000808


The other had a lot. In 17 passes it had 55 errors.

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