Hello all, I'm really sorry if this is a double post but I am new to these forums and have encountered a problem that is quite frustrating. I have an HP Pavilion desktop that I am upgrading. It is the a1328x model. Since purchase I have upgraded RAM (no problems), replaced the video card (no problems) and upgraded from Windows XP Media Center Edition to Windows 7 Professional. Recently with my income tax money I have chosen to upgrade the video card once again and purchase a new processor. After studying the specs of my motherboard via the HP website I found the equipment I needed and ordered. Video card and processor were installed with minimal problems on the hardware spec. The processor that came with my motherboard was 533mhz Front Side Bus. The new processor is 800mhz Front Side Bus. The PC seems to boot correctly and slightly faster. My problem is a couple times every hour everything freezes for about a minute, like the computer is trying to process something and then comes out of it. This problem occurred after the processor upgrade, otherwise I've had no problems. Anyones professional opinion on why the PC might freeze would be great. Thanks in advance!