I am stugerling to solve a problem with my recently purcahsed P5Q Deluxe...
I repalced my previous motherboard (P5W DH Deluxe) because of a bad bios update, upart from that the system worked find.
After changing the board(I performed a fresh install of windows) my system randomly freezes. The mouse locks, the keyboard is not responive - No blue screen the monitor just diplays what was last shown on the screen. The only way to get out is to push the restart.
I have updated the bios, and from reading online disabled C1E Support and enabled ACPI 2.0 but the system still locks. Everything is set to default in the bios and my CPU is running at stock .
Has anyone got any surgestions before I send this board back to the supplier for a replacment?
(I have checked the event logs in windows but the only thing it recoreds is an unexpected shutdown)
My specs are the following:
Q9550, P5Q Deluxe, 4 X 2GB DDR2 800, ATI 4870, Creative X-FI Extreme Music, Western Digial Rapter 160GB 10K (WD1600ADFD) for windows 7 64bit, Samsung 1TB F3 for data, Antec Truepower 650W, LG Sata DVD Burner.
A Q9550 with 8 GB RAM will require some adjustments to RAM and chipset voltages in BIOS. Otherwise the RAM will default to SPD values including the inadequate 1.8v default voltage. RAM voltage, timings and speed should be et manually. The Northbridge chip contains the memory controller, so raising the voltage to the NB in conjunction with the voltage increase to the 4 Dimms goes hand in hand. My X38 will crash too if I did not make the voltage adjustments.
One other thing, you mention the system just 'locks up' keyboard, mouse. I had that happen on a machine recently. It started with lockups like you describe, becoming more frequent then eventually Bluescreens. Long story short about diagnosing and eventually finding the problem and fixing it. It was a bad SATA cable to the HD.
Yeah, your only option to OC the Q9550 is to increase the FSB. It will be the RAM that limits the OC. PC26400 is guaranteed to run at 800MHz. Ocing PC26400 usually can reach 900MHz or slightly better as the FSB is increased. If OCing the FSB on the Intel P45, set the RAM speed lower than 800MHz. The increase in FSB speed to OC the processor will not take the RAM above it limits when that speed is drug along with it. My 2 cents.
Good news – system was on for 2 ½ hours last night without freezing. This morning I have had it on for 3 hours with prime95 running as well as downloading 2 large torrents. I think that voltage adjustment may have done the trick; I will leave the system on for the rest of day and fingers crossed no hanging. Many thanks for your help and advise.
I can't honestly agree with all of the advice you received above.
First of all, whenever you populate all 4 DIMM slots, even with the
P45 chipset, there is necessarily more stress on the Northbridge
(Memory Controller Hub) -- exactly TWICE AS MUCH stress, in fact.
Many contributors here will immediately advise you to up the
DRAM voltage FIRST. I disagree.
BEST WAY, imho, is to initialize with BIOS defaults ("baseline"),
then to tweak the "NB Voltage" next (see Section 3.4.18 in your
motherboard's User Manual).
There are four ranges: blue, yellow, purple and red.
The highest setting in the "blue" range is 1.26 Volts.
Another reason why it is important to try this setting first
has to do with the way the chipset interacts with the
SPD settings in your RAM DIMMs. (BTW, you didn't mention the
memory brand: that would help us).
Thus, you should start out with DRAM Voltage set to DEFAULT:
this is still "baseline".
When you get your system up and running, install CPU-Z
and take a look at the SPD options that the chipset reads
from your installed memory. Then, examine carefully the
memory settings the chipset actually selected:
the DRAM frequency should default to 400 MHz.
However, here is where you can encounter problems:
with all 4 DIMM slots populated, you may need to relax
the timings a notch or two, keeping the DRAM frequency
at 400 (see more discussion below re: FSB : DRAM ratio).
If you have trouble reaching the BIOS with this "baseline",
try removing the uppermost 4GB, and populate only
the lower 2 dual-channel slots. This should allow you
to boot into the BIOS and tweak the NB Voltage.
But, while you have only 2 DIMM slots populated,
do remember to relax the RAM timings, if BIOS
defaults also happen to select the most aggressive
timing options available in the SPD chip.
> Q9550, P5Q Deluxe
Also, we just installed 16GB on the P5Q Premium and,
after tweaking the NB Voltage as described above,
all we needed to do to OC the same CPU was to
increase the "Bus Speed" to 400 MHz (1600 "Rated FSB"
using CPU-Z nomenclature). With SpeedStep enabled,
we see a totally automatic overclock to 400 x 8.5 = 3.4 GHz
whenever the system gets busy, and 400 x 6 = 2.4 GHz
whenever the system is idle.
These settings produced a very comfy synchronous 1 : 1: FSB : DRAM ratio
again using CPU-Z nomenclature.
My BEST GUESS is that you should test a slight increase
of the NB Voltage while leaving DRAM Voltage at AUTO:
call this "baseline + 1". Further iterations should help
you fine-tune your system.
I did order 2x4GB sticks of Crucial memory to replace the Corsair memory that my system was crashing with. I found that either new 4GB stick worked fine in Dimm slot A1 but if I installed the second 4GB stick into slot B1 the system was extremely slow. Almost to the point of not responding at all. In the bios it recognized the total 8GB of RAM but was slow. So, now I am thinking that the Dimm slot B1 may be defective. Or do I need to set voltage different?
This is my first build, thanks for again for your help.
found that either new 4GB stick worked fine in Dimm slot A1 but if I installed the second 4GB stick into slot B1 the system was extremely slow. Almost to the point of not responding at all. In the bios it recognized the total 8GB of RAM but was slow. So, now I am thinking that the Dimm slot B1 may be defective. Or do I need to set voltage different?
Well, I have the P5Q Turbo running perfectly stable with 2GB x 2 plus 1GB x 2 (6GB total) G.Skill PC28500. I have 4 x 2 GB PC28500 installed originally and the system was perfectly stable. I have the latest BIOS and chipset drivers. Also, the RAM' s speed, timings and voltage are manually set to G. Skill's specifications. I bumped the NB voltage to 1.45-1.5v. The memory controller is located on the NB. Other than making all the adjustments mentioned, it is possible the board you have is defective. Possibly contact Crucial online chat and see what they suggest.