|20 Aug 2012||#12|
So an Update,
I took the apparently dead RAM module to work were we have a workstation motherboard that supports semi-hot swapable RAM, meaning we can add ram at any time, but can only take ram out while it is off.
So one of my co-workers mentioned that the actual RAM chips usually have a ROM portion, just like a BIOS. We then ended up dumping the contents off the bad RAM stick, and as it turns out there was 'bad' data on the ROM portion of the chip that got stuck somehow, ie even after power cycles a portion of the memory couldn't be cleared.
The WS mobo we had had a bios option to do a low level clear of ram, it apparently works by providing power and then writing 0's until all address spaces were used up, then it cuts off the power to the RAM and grounds the entire bus letting all the transistors return to the off state.
After going thorough this 2 hour process at work with my colleagues, the RAM now works.
Although I wont put much faith in it until I run some memset tests and see if it truly does hold up, if it does then I will re-use it, if it doesn't then I'll just not use it.
Overall this has been an interesting journey!
Please let us know how the Memtest turns out.
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