Recently I replaced my old nVidia GTX 480 with a new Asus AMD R9 290. Since then, my computer has been randomly locking up (as in, the mouse stops moving and network services stop responding to requests) and I need to press the reset button to get it to work again.
It has never happened while playing a game (like Watch Dogs) or otherwise actively using the computer. But I've left it alone before only to find some hours later that I can no longer access my server, and sure enough it is hard-frozen.
Maybe I dislodged something when installing the video card. Maybe the card is just bad and somehow this freezes the entire system, maybe the PSU isn't rated high enough for the new hardware (this is unlikely because as I said, it doesn't seem to be brought on by high load).
- AMD Phenom II X4 965 3.4GHz
- Asus M4A78T-E motherboard (4 years old, latest BIOS)
- 8GB RAM
- Asus AMD R9 290 4GB
- 3 hard drives totaling 3.5TB
- Antec 900 case
- Corsair VX550 (4 years old)
- Windows 7 Ultimate 64-bit
I run a Debian install under Virtualbox
I am not overclocking anything. There is no indication of overheating. Voltages and timings are unchanged. Nothing remotely unusual shows up in the event log and there are no BSODs or odd behaviour except for this.
Any ideas? I'm really at a loss.
Update: This happens under Linux as well, so it can't be drivers or such.