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physiker

System dying -- worked many months

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Can anyone help me solve this puzzle:

 

I built my signature system in July 2005 and lurked on the forums here until I could get the memory to work (big thanks to Mucker and Malachi!!).

 

The system worked well until February 2006. Starting then, it gradually degraded and now applications fail every couple minutes (e.g. Firefox/Thunderbird/Windows services), and once or twice per day it generates a BSOD (message not up long enough to read it) and reboots.

 

When it first started failing setting bank interleave to "disable" seemed to help, as did disabling CPC, but it continues to degrade (failure rate increasing, more BSOD).

 

So two questions:

 

How do I start to isolate the problem? Replace memory/CPU/MB one at a time, or are there diagnostics that will help?

 

What can I relax in the BIOS to reduce the failure rate?

 

 

Diagnostics to date:

Last summer, Memtest and Prim95 ran for 24 hours each with no errors. OCCT ran for hours with no errors.

Yesterday, Memtest 1.5 ran for eight hours with no errors, but prime95 failed in 30 seconds -- and then ran for an hour on the next try.

Temperatures are 24/34/42 C for CPU/PWMIC/CHIPSET (idle, but it fails while idling)

Voltages are within 1-2% of nominal -- note 2.9V is lowest voltage that boots Windows for my memory (haven't tried higher).

 

BIOS settings:

HTT 200

LDT x4

PCIex 100

LDT v = 1.3

Chipset v = 1.6

Vddr: 2.9v

CPC: Enable [Now Disabled]

Tcl: 2.5

Trcd: 3

Tras: 7

Trp: 3

Trc: 11

Trfc: 14

Trrd: 3

Twr: 3

Twtr: 2

Trtw: 3

Tref: 3072 (200MHz 3.9us)

Twcl: 1

Bank int.: Enable [Now DISABLE]

Skew control: 0 (increase)

Drive strength: 7

Data strength: LEVEL 3

Max. Async: 7ns

Read Preamble: 5ns

Idle Cycle: AUTO (16)

Dyn. Counter: disable

R/W Bypass: 16x

Bypass Max: 7x

32Bit Gran.: Disable

 

Thanks,

Physiker

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2,9 vdimm :rolleyes: on tccd for 24-7 use?

i vouch for rma...sorry m8....i have seen quite a few cases of tccd giving troubles after a long term use of high vdimm

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Firstly, your RAM is TCCD based if I am correct (just googled). If so, you might have killed you RAM for running it at high Vdimm for too long. The kill means degrading, not physically killed.

 

I will never set my TCCD to run at 2.8V or higher except for some crazy OCing, really.

 

I would try this:

 

HTT 200

LDT x4

PCIex 100

LDT v = 1.2

Chipset v = 1.5

Vddr: 2.8v

CPC: Enable [Now Disabled]

Tcl: 2.5

Trcd: 4

Tras: 8

Trp: 4

Trc: 11

Trfc: 16

Trrd: 3

Twr: 3

Twtr: 2

Trtw: 3

Tref: 3632 (200MHz 3.9us)

Twcl: AUTO

Bank int.: Enable

Skew control: 0 (increase)

Drive strength: 7

Data strength: LEVEL 3

Max. Async: AUTO

Read Preamble: AUTO

Idle Cycle: AUTO

Dyn. Counter: disable

R/W Bypass: AUTO

Bypass Max: AUTO

32Bit Gran.: AUTO

 

If not helping, try run with just one stick of RAM in orange slot, see any improvement. Or borrow friends' known good RAM for comparison.

 

Good Luck.

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