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Once stable, does'nt POST now!

post #1 of 15
Thread Starter 
Please help me figure out what happens with these settings:
E7200 CPU 3,515MHz (370 x 9.5)
FSB to 370 (1,480 FSB)
Corsair DDR2-800 memory running 1:1 at DDR2 740 MHz.
VCore 1.3375
NB 1.26
DRAM 2.10
This configuration was stable on Feb 15th (2h OCCT, 15h Prime95, 1h Memtest).

Then, I tried to speed the RAM up and put it as follows:
E7200 CPU 3,515MHz (370 x 9.5)
FSB to 370 (1,480 FSB)
Corsair DDR2-800 memory running 6:5 at DDR2 888 MHz.
VCore 1.3375
NB 1.26
DRAM 2.10
2 passes of Memtest86+ (1h) were Ok, but Prime95 failed by test 5 in small FFT.

Then I tried, one at a time,
- to increase NB to 1.28,
- Enable one setting named "MEM OC charger",
- Change "CPU Margin Enhancement" to optimized
- Increase timing latencies to 6-6-6-18 (from 5-5-5-15)
Each time, went directly to Prime95, just to find out that, no change, it was showing error between tests 5 and 7, using small FFT.

Then, I tried to fix CPU PLL voltage and FSB termination voltage settings to the standard (1.50 and 1.10) instead of AUTO. No luck.

Finally, I tried to come back to
E7200 CPU 3,515MHz (370 x 9.5)
FSB to 370 (1,480 FSB)
Corsair DDR2-800 memory running 6:5 at DDR2 888 MHz.
VCore 1.3375
NB 1.30 <--------
DRAM 2.10
And, bad luck, it was difficult to make it POST. Although I did not need to reset my BIOS, I had to shutdown the PSU and retry, it would only POST occasionally.

I tried to come back to the DDR2-740 configuration above, and still I had the problem of the computer not POSTing, no beeps, no lights in keyboard, no nothing.

I had to come back to a 3.24 GHz profile to make it work nicely again.

Why a once stable configuration suddenly did not want to POST?

Any help please, will be greatly appreciated.

PS: This issue happens with my Sig Rig.
My Asus 2008
(13 items)
 
  
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250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
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250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
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post #2 of 15
It's hard to say but, you could try a bios update and see if it improves anything. The older P5Q biosses weren't all that great.
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post #3 of 15
What is the max voltage that your northbridge can handle? The reason I ask is that I see that you went from 1.26 to 1.30 and on my P5n-e I am running @1.56v nb and have had it as high as 1.7v. Maybe a little more juice to the nb would help.
Dr. Feynman
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post #4 of 15
Thread Starter 
Quote:
Originally Posted by Acoma_Andy View Post
It's hard to say but, you could try a bios update and see if it improves anything. The older P5Q biosses weren't all that great.
I have the latest BIOS from Asus. I have been updating it since there seems to be a problem with the onboard chassis fan controller.


Quote:
Originally Posted by RaBidRaBit View Post
What is the max voltage that your northbridge can handle? The reason I ask is that I see that you went from 1.26 to 1.30 and on my P5n-e I am running @1.56v nb and have had it as high as 1.7v. Maybe a little more juice to the nb would help.
I don't really know what's the safe limit. BIOS has 1.10 as min & Std and 1.70 as Max (which seems too high). Where could I find the safe limit?

Now, the question remains:
Why did it show problems when it was already proven stable?
My Asus 2008
(13 items)
 
  
CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
Mouse Pad
None 
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My Asus 2008
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CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
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post #5 of 15
Quote:
Originally Posted by mcastaneda68 View Post
Why did it show problems when it was already proven stable?
That's impossible. There must be something you have set diffrently then the last time you had it at that OC. Or else:

1) The board/PSU is degrading.
2) The CPU is degrading.
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Crucial MX300 525GB SSD, Seagate 3TB, Samsung 1TB Noctua NH-U14S Windows 10 Pro 64-bit Samsung U24E590D UHD 
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Hard DriveCoolingOSMonitor
Crucial MX300 525GB SSD, Seagate 3TB, Samsung 1TB Noctua NH-U14S Windows 10 Pro 64-bit Samsung U24E590D UHD 
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post #6 of 15
Try a CMOS reset and then set the settings back to the 740 configuration, exactly how they were, with 5-5-5-15 timings and everything. See if that works.

-Matt
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post #7 of 15
First try resetting the CMOS, and start over with some conservative settings.

The P45 northbridge can easily handle 1.3v without much issue, and can go higher with better cooling. This may help stabilize the system as you crank up the FSB.
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post #8 of 15
Chip creep perhaps?

Take the CPU out of the socket and replace it and try again.
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post #9 of 15
Thread Starter 
Quote:
Originally Posted by Acoma_Andy View Post
That's impossible. There must be something you have set diffrently then the last time you had it at that OC. Or else:

1) The board/PSU is degrading.
2) The CPU is degrading.
It's hard for me to believe PSU or MoBo degrading, since the PSU is almost new (Dec '08) and the MoBo is Oct '08.
I will retry retyping every single configuration, maybe you are right.
BTW, I just found another stable setup:
3.42GHz (380x9)
761 MHz DDR2 @ auto timings (5.5.5.15)
1.3375 Vcore
1.26 NB
CPU Margin Enhancement: Performance
Load Line Calibration: Auto
Quote:
Originally Posted by grossebeaver View Post
First try resetting the CMOS, and start over with some conservative settings.

The P45 northbridge can easily handle 1.3v without much issue, and can go higher with better cooling. This may help stabilize the system as you crank up the FSB.
I just found another stable configuration @ 3.42 GHz (380x9), with 1.26V on the NB. So, I think it was CPU related.

Quote:
Originally Posted by FenixFlame View Post
Chip creep perhaps?

Take the CPU out of the socket and replace it and try again.
The CPU loosening off the socket?
I find it kind of hard to believe, since I just found another stable configuration @ 3.42 GHz (380x9).
Anyway, I will give it a try when I upgrade my CPU cooler. I would'nt do it now to avoid "damaging" my CPU/HSF contact & grease
Edited by mcastaneda68 - 2/20/09 at 4:44am
My Asus 2008
(13 items)
 
  
CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
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My Asus 2008
(13 items)
 
  
CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
Mouse Pad
None 
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post #10 of 15
Thread Starter 
I just noticed that after I shut down the computer, I wasn't able to turn it back on and make it post immediately. After turning on, I had to hold the power button in until it re-starts.

Once restarted, it will POST and I can do as many restarts as I want, seems that it will always POST.

Any ideas?
My Asus 2008
(13 items)
 
  
CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
Mouse Pad
None 
  hide details  
Reply
My Asus 2008
(13 items)
 
  
CPUMotherboardGraphicsRAM
E7200 @ 3.39 Asus P5Q-EM BFG 8800 GT OC 512MB 4GB - 2x2GB HyperX 800 MHz 
Hard DriveOptical DriveOSMonitor
250x2 RAID0 + 500 GB Seagate 7200 SATAII DVD+/-RW LiteOn SATA W7 Ultimate x64 Samsung 2053BW 
KeyboardPowerCaseMouse
Microsoft Comfort curve 2000 Corsair 650TX Cooler Master Elite 330 Microsoft Wireless Laser Mouse 6000 
Mouse Pad
None 
  hide details  
Reply
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