I've recently put together a home system using a mixture of new and spare parts. I know all the old parts work fine, and the new parts seem to be running just as normal, but occasionally the system becomes completely unreponsive for about 10 seconds, and simply carries on without any sort of error message. I kept an eye on task manager when this happened again, and I noticed that the primary disk(SSD boot disk) usage spikes to 100% when this happens. Everything else stays within normal idling range, no changes in temperatures neither. There is no anti-virus running in the background, no downloads, and the system has a fresh copy of Windows 8.1 64bit.
Specs:
AMD Phenom II X4 955
Gigabyte 970A-D3P
Zotac GeForce GT640
2 x 2GB DDR3
Corsair F40 SSD
Seagate 750GB HDD
Rosewill RX850
Specs:
AMD Phenom II X4 955
Gigabyte 970A-D3P
Zotac GeForce GT640
2 x 2GB DDR3
Corsair F40 SSD
Seagate 750GB HDD
Rosewill RX850