MODERATORS NOTE:This was originally posted under this thread: http://forum.giga-byte.co.uk/index.php/topic,6712.0.html but I felt, in the interests of clarity and to avoid any confusion that it should be under its own heading.I too had the exact same issue with my GA-990FXA-UD3. On a cold boot, everything would work fine. If I performed a reboot, either soft or power cycle, while the board was warm, I would get power, but no video. To get the system to boot again, I needed to let it cool down and then hit the power switch. Additionally, if I were to enter the BIOS setup, the cursor would be very slow to respond. I could hit an arrow key, count to three and then the selection would move to the next item. I returned that motherboard for an exchange. With the replacement GA-990FXA-UD3, I am having a different issue. Windows 7 will Freeze after 30 minutes or so.
My video card is an NVIDIA 8800GT, fresh from my old system and has never had any issue.
The CPU is an AMD 1100T.
I have 8 GIG of Corsair Dual Channel installed. (two sticks of 4 GIG each)
The power supply is a new RocketFish with all the right connectors.
My case is a full tower. It stands four feet tall and has LOTS of room for fans, cables, and drives.
The liquid cooling system is a Zalman Reserator augmented by a fan and radiator setup.
Ok then, here is what I have done to my system, trying to diagnose this issue;
- I keep all of the BIOS settings at factory default. No sense trying to OC something that doesn't work the way it should.
- The BIOS had been flashed to the latest version, using GIGABYTE's own utility. No change.
- I have installed a fan on the NorthBridge chipset. I found it was getting quite warm to the touch. The fan keeps it nice and cool. No change.
- All of my hard drives are from my old system. They are all SATA and in good working order. Main boot drive is SSD and less than 6 months old.
- My CPU is using a Liquid Cooling setup. It keeps the CPU at a very comfortable 22°C. No issues there.
- I downloaded the latest version of UBCD and ran MEMTEST 4.20+ on the 8Gig of RAM. No Issues there.
- While playing Plants vs. Zombies, I had the sound crap out on me and then, a couple of seconds later, the PC froze. I then disabled the onboard audio and installed my Sound Blaster Audigy II ZS. No change.
- I brought home an industrial sized fan, from work, took off the side cover and just blasted air into the case, to ensure EVERYTHING is being cooled. No change.
- My hard drives are sitting outside of my box now, to reduce ANY extra heat in the system. No change.
With all of that said, I am going to perform a couple more tests;
- I need to run a stress test on the CPU
- A good friend has a system with a 1090T CPU. We're going to try swapping that in.
- I have gotten a second 8800GT, for SLI purposes. I will replace my video card with that one first, to see if there are any changes.
- I am bringing home an ATI PCIe video card, again from work, to try that in the system, just in case there is some funny business going on between the ATI chipset and the NVIDIA video card?
What to do after all of this? I hope there WON'T be any "after all this" Still, I am at a loss as to what the problem is. I trouble shoot computers for a living and this is a real head scratcher.
--The Noof--
Ottawa, Ontario
Canada
