Hi everyone, I'm not sure where the best place to post this is, but recently my homebuilt computer has displayed some odd behavior during startup.
I have no issues or crashes in Windows 7 or booting up windows 7, but when I attempt to restart my or turn on my computer it tends to get stuck at the gigabyte splash screen.
none of the fn commands to open the bios or view the post screen are responsive.
The solution to this is turning my power supply off, waiting a few seconds and turning it back on. Then the computer boots normally when I press the on switch.
I did a memtest using Windows 7's built in one, but it came up with nothing.
Something wrong with the BIOs? or is it hardware, my motherboard?
That would be my first guess. The fact that you're mixing RAM of different size and speed ratings isn't helping your cause. We need to know what the rated timings and voltages are for each RAM kit. The RAM will have a sticker on the side with that information. Mixing RAM like you have is asking for problems.
You'll at least have to set the RAM values to the lowest values which means that your DDR2 800 RAM will run at 667MHz. The same goes for the timings and voltage. If one kit is rated at 4-4-4-12 timings at 1.8v and the other is rated at 5-5-5-15 timings at 2.1v you'll have to set all the RAM to 5-5-5-15 at 2.1v.
To be honest, I have no idea what's wrong at this point. Bad RAM is just a common spot to start looking, as is overheating (which shouldn't be an issue) and bad PSUs. Memtest is just a good thing to start with.
You might want to check out the "Read Before Posting about Boot Problems" sticky. While it's focused more towards builds that have never started, it's a good spot to start troubleshooting.
Do you get any codes (lights, beeps, etc.) from the board before the problem? Do all the fans spin up (CPU, PSU, GPU, case)?
the one thing that is weird for me, is that turning the hard switch on the power supply and turning it back on fixes it 100% of the time. Its as if something needs to be cleared (ie all power gone) before it can restart.
I'm not sure its the ram only because I would've thought I'd see some issues come up while I'm working on the computer.
I leave my computer on almost all the time (sometimes as long as a week without restarting), play games (MW2, dragon age etc.), watch movies etc. and I never have any random crashes or glitchy behavior usually associated with bad ram.