Hello, I'm not sure what category to put this in. I'm having a problem: I boot my system, all seems fine - then gradually - over the space of a few minutes - everything starts to slow down at an exponential pace. I've checked CPU and RAM usage of processes for all users and nothing seems out of the ordinary. CPU is usually below 10% and ram is usually below 30% totals. Naturally I thought it was some kind of software issue, until I realised the BIOS was responding really slowly as well - and not gradually; instantly - it's taking about 5 seconds to respond to key presses. Now I think it's hardware related - I started a repair with HDD Regenerator this morning on my OS HDD and I intend to run memory testing when that is done. If those come up blank I fear there may be a problem with the motherboard. The system slowdown had been happening for a while, but I never took it seriously because it wasn't that bad at first - I'd just reboot (I'd have to do a hard reboot because it would just stop responding - although the mouse didn't freeze) Yesterday I managed to get a working task manager window to kill Avast and everything snapped back up to speed - so I installed Avira and it worked well until this morning when the same thing started happening. Sometimes if I put it to boot and left it, I would come back to find everything non-responsive. I have to point out that in all cases - mouse movement was retained. Sometimes it even works well for a full 24 hours or more before the slowdown starts, but it seems to be getting worse and more frequent recently. Anyway, any other ideas on what it might be? I'll post when I get any results or changes. I even checked the motherboard to see if I had leaky capacitors, but strangely I didn't even see any capacitors of the type that you would see leaking (with the notched heads that would bulge). System specs are below: Processor: AMD Phenom II X6 1090T BE Memory: Markvision DDR3 1333 4x2GB Videocard: ATI Radeon HD 6850 HDD1: WD 1TB partitioned with 200GB for OS and ~800GB for whatever else HDD2: Same as HDD1 and used for backups using Acronis True Image DirectX version: DirectX 11 Op. system: Windows 7 Pro x64 Motherboard: ECS A785GM-M Power supply: ThermalTake T2 750W Please help! Thanks.