A few months ago, I rebuilt my PC from scratch, but have had issues ever since. Hardware spec is as follows:
- Gigabyte Z77-D3H with BIOS F18
- i5-3570k running at stock speeds
- 16GB RAM in 4x4GB at stock speeds
- Geforce GTX 560 Ti
- On-board HD 4000 GPU
- On-board VIA audio
- On-board Atheros GbE
- 2x Crucial m4 128GB SSD drives in RAID0 for OS and apps
- 1x 600GB WD Black drive for data
- Pioneer BD Burner
Yesterday, I decided to reinstall the OS (Win7 Ultimate 64bit) and have done so, then applied all the updates from Windows Update.
Drivers are up to date: I've used the latest ones published on Gigabyte's website, including the Intel Storage drivers to support TRIM in RAID0 mode. I've also checked that the nVidia drivers I'm using (314.07) are the latest compatible / certified with the GPU virtualisation (v 2.1.224.26520)
Symptons are as follows:
cold boot, log into W7, and a short while after doing that, I either get the system freezing (mouse moves, but has circle waiting icon). Ctrl+Alt+Del has no effect, but numlock works.
If the sytem doesn't freeze (I have to do a hard reset), then I get a BSOD. Causes of the BSOD vary from non paged memory to ACPI to just about anything else.
Strange thing is that when this happens and I reboot, the system then seems to operate fine.
So far I've tried a reinstall of Windows, I've done 3 full passes of MemTest, all OK. I guess the CPU is fine as I've done some video encoding for several hours, consistently at 90-100% CPU and it hasn't missed a beat.
I can't determine whether the issue is hardware or software / driver based.
I guess the next thing is to try uninstalling MVP, nVidia drivers and take the card out, relying only on the Intel on-board GPU to eliminate that as a possibility. But failing that, I can't see what else it could be.
When I bought the motherboard (it's the revision 1.0 version. I see there's a 1.1 out but can't understand what the differences are?), it didn't have the latest BIOS and I had the same issues. Updating to the latest F18 hasn't resolved them. I haven't tried the beta BIOS, but can't imagine it being an issue - I'm fairly sure the Z77-D3H is a popular board and haven't seem anyone else with the same issues. Admittedly, I haven't done an awful lot of research.
In my 15 years of building PC systems, I've never had these wierd issues where I can't isolate the cause, so I'm a bit stumped.
Anyone have any ideas?
TIA