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Confusion Abound

Guest FZ1_merged

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Here's a new one on me...

Yanked my CPU out (in sig) to test the new 170 I got. Finished and put the old one back in. Did a complete CMOS clear and turned her on. Entered all of my settings (below) that I had been using before that I knew to be stable (did not use CMOS reloaded). Will not load windows - gets to the "DMI" screen but never actually says it and hangs.


FSB - 317

LDT - x3

CPU/FSB Ratio - x9

Vcore - 1.450 x 110%

LDTv - 1.30

CHPv - 1.6

vDIMM - 2.6


DRAM Frequency Set - 166 (DRAM/FSB:5/06)

Command Per Clock (CPC) - Enable

CAS Latency Control (Tcl) - 3.0

RAS# to CAS# delay (Trcd) - 04 Bus Clocks

Min RAS# active time (Tras) - 08 Bus Clocks

Row precharge time (Trp) - 04 Bus Clocks

Row Cycle time (Trc) - 07 Bus Clocks

Row refresh cyc time (Trfc) - 14 Bus Clocks

Row to Row delay (Trrd) - 03 Bus Clocks

Write recovery time (Twr) - 02 Bus Clocks

Write to Read delay (Twtr) - 02 Bus Clocks

Read to Write delay (Trwt) - 03 Bus Clocks

Refresh Period (Tref) - 3120 Cycles

Write CAS Latency (Twcl) - 01

DRAM Bank Interleave - Enabled


DQS Skew Control - Auto

DQS Skew Value - 0

DRAM Drive Strength - Level 7

DRAM Data Drive Strength - Level 3

Max Async Latency - 8.0ns

DRAM Response Time - Normal

Read Preamble Time - 5.0ns

IdleCycle Limit - 256 Cycles

Dynamic Counter - Disable

R/W Queue Bypass - 16 x

Bypass Max - 07 x

32 Byte Granularity - Disable(8 Bursts)

So, I try 10 x 285 with the rest of the settings the same and it boots to windows, no problems. Now I'm confused.

> why can't I boot to windows @ 2853 (9x317) but can boot at 2850 (2850) when I was already stable at the 2853 for weeks?

> I changed absolutely no hardware except when I swapped CPU's

> My temps are great


I even tried using a bigger divider but it had no effect. Any ideas? It's killing me.

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Might want to reset your configuation data in BIOS.


Get into BIOS


Find PNP/PCI Config.


ENABLE reset configuration data


Save and reboot into Windows.


Re boot and repeat the steps above but make sure you DISABLE reset config. data.


Then put in you old values and see if it works.


Worth a try.

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Known issue when swapping between single and dual core processors. Go to My Computer, right click > Manage > Device manager > computer and see if it says ACPI Uniprocessor or ACPI Multiprocessor. You may need a Windows reinstall if it's the wrong one.


They were both 170s I think.

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They were both 170s I think.

Correct sir!


Just to be clear about the problem - I can still boot to Windows stable at 2850. However only at 10 x 285, not at 9 x 317 where I had it set for weeks. So in effect, I lost the 9x multi. Not a huge deal I guess but it makes me wonder what is wrong...the board or the chip.

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Try to reflash the bios and give it a nice cmos clear with the battery out..


Sometimes when I was pushing my x2 3800 too much I'd try to revert back to my old settings that I knew were 100% stable and they didnt work.. Reflashing cleared this up for me everytime..


Another thing you can try is to work your way back up into your max overclock.. This has helped me at times..


One more thing to think about.. If you took out your ram sticks with the cpu changes maybe you didnt put the sticks back in the exact slots they were in.. Try to swap them in the slots they are in..

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Thanks, Bro. I never removed the RAM sticks but thought of swapping them anyway. I'll try your suggestion this eve.

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No, I had already cleared CMOS and took battery out etc. It was reflashing the BIOS. Something must have gotten corrupted. Now I'm wondering if I should throw that new chip in again to see if my results were screwed up.

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