Cpt.Dogfruit,

I have had this same issue! I can run stable with 2 modules at 1333Mhz, but any more and it gets unstable. I'm curently still running 2 modules of 2x2GB, and even going as far as overclocking my CPU. It's a 9300 OC'ed to 3.00GHz (from 2.50GHz). The system won't run stable set as 1333MHz, because the ram is also OC'ed if I modify the host clock frequency in order to get an OC'ed value, so I have to set ram to 1066MHz, that way with the OC'ed value memory bus is currently running at 1280MHz and stable, solid. I've been using this setup for about a month and a half now and never had any problems. My current uptime is 2 weeks without a reboot. I have run stress tests and stability tests as well and all is well.

Just to state that overclocking an Intel board, even though the motherboard description states that overclocking is possible and they advertise to gamers that it's easy, is very tricky to get a stable result. Simply changing the clock frequency won't be enough. Voltages have to be tinkered with as well, and cooling MUST be upgraded as well. The stock intel cooler will not do, unless you've got extra fans blowing everywhere around your computer case and feeding the CPU cooler. I haven't gone as far as modifying my ram voltages, so I'm still running the manufacturer's value at 1.7v and things are still fine.

Overall from my last post, I'm still running stable with the DP45SG on a Vista Ultimate 64bit platform.

Hello,

         You can disable your desired devices through Device Manager.Note that Fire wire type is OHCI complaint 1394 adapter or something like this!.

Hello,

         Okay if you knew where to disable then i must say then face it yourself coz this is the incompatibity issue and you should take these steps:-

1) Disable or uninstall devices by means they are integral so just uninstall their softwares,

2)Try ro reinstall or reset the sofftware in the enviornent you want suppose you want to run it without those devices then also try their reinstallation in that configuration.

3)If it does'nt work then check your computer for device and software errors by running this software http://downloads.guru3d.com/download.php?det=1655

this software will remove any unnecassary device of your choice remember though that this will uninstall all it's registery enteries and it's settings except for BIOS settings.

If you don't like my suggestion, then don't give any reply.I hope you don't need to face it again.

Glad to hear you're using this: I plan to keep it much more aggressively up-to-date than has been the case in the past, but don't hesitate to let me know if you find errors or need clarifications.

Cheers!

Natalyah

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I have the 402 REV motherboard and I have my system runing Windows 7 build 7100 perfectly stable now.

I have the DP45SG motherboard with all the latest BIOS upgrades and I am using 1333 of 8Gig Kingston Memory.

"All" I had to do, ultimately, was up the memory voltage to 1.75 from 1.5 volts.

Kingston tried to tell me 1.5 was fine, but the Intel docs say you can run the memory hot without worrying about damaging it--1.5 was not fine.

I also have a rev 404 board that reboots and looses time. Intel is RMAing the board, but pumping up the volts did help--I think that board has other problems though.

I did also ramp my power supply up to 1000w Antec from a 550 and 650 before I changed the voltage to 1.75 volts.

I have a single Radeon 4890 video card and a 9650 Intel 4 core and this machine is smoking.

I am very happy.

Good Luck...

Hi There!!!!!!!!!!!!!

Sorry for the late answer re:dp45sg.

I was facing the same issue the way every one faces. It is really a headake. How ever after I try what every one did I come to conclusion that

the compatibility issue only. To avoid freezing and reboot, I did change the older model of video card pro1650 ati radeon, and it works very perfectly.

the new video card is not compaatible with this motherboard. Any question u can e-mail me Iyasu_i@hotmail.com

Think I finilaly figured it out Ram Prob. This board will only use dual channel ram , No tripple channel ,. 10600 being dual and 10666 being triple . no more beeps on post.

I might as well put in my $.02 as well. I built up a system around a DP45SG which has been very reliable and stable:

cpu - Q8300,

2 x 2g DDR3 1333 PC10666 OCZ CL7-7-7-20,

3 x hdd,

2 x dvd/cd, 9800gtx video,

Thermaltake TR2 RX 550W psu.

I bought a Q9550 to take advantage of the virtualisation in W7 - the Q8300 has no hardware virtualisation support. Swap chips - no post. Fans spin but nothing happens. Swap back - all is happy. I had the shop check the Q9550 and it booted happily on their test bed. So. Tried single channel (one stick of RAM), tried unplugging everything except video w/1 stick RAM, reset CMOS - no joy. Intel suggested regressing BIOS back to 0073 (it was on 0121). 0073 wasn't available so I tried 0083. Nothing. The Q8300 is back in the box and everything is happy again - except me because I want to use the bloody Q9550. By the way, I'm dual booting xp pro and 7 pro (there's also an installation of 7RC which I'm keeping until I'm sure that everything is migrated to the 7 pro instal).

I've just about reached the conclusion that the DP45SG is a bit of a lemon and is unpredictably unreliable. A bit of research has indicated that currently Asus boards are considered the most reliable - this is corroborated by several sources. I've been using Intel boards for quite a while now but I'm starting to think that the time has come to rethink that strategy.

if anyone can suggest something I haven't yet tried (short of spending hundreds of dollars on different components just to see if it works...) I'd love to hear about it.

cheers