DPC and interrupts

[DPC Overload]

Just gonna give a thanks in advance to anyone who helps me with this plague.

I recently started having an issue where my CPU would run at 100% for long periods of time, when i opened task manager it did not show what was eating up all the CPU so I searched the web and found Process Explorer. I used that and found that my DPC's and Hardware Interrupts were the problem. DPC is using on average 50% CPU and Hardware Interrupts around 20-30%

I then searched more and found and downloaded RATTV3 but now this is where im stumped. I have the log of the stuff it scanned but no clue what it means. I am posting the Histogram but i honestly have no idea what im looking at so any help would be great.

I am using Windows XP Pro SP3

Edit: I forgot to mention that my DPC and all problems seem to dissappear when my wireless internet seems to randomly turn off so during the time its off everything seems to be normal but as soon as the internet comes back all the problems start again...any help and as quickly as possible would be great cause im running way behind in school work since its all online