Computer Hiccups - help please

[Mosrael]

Well I recently bought this computer and have had no problems with it.  Processor is AMD Phenom 9850 quad-core 2.50 GHz with 6.00 GB ram.  The problems i've been experiencing start with a slow start up/shut down and an unresponsive program startup (for example, MSN or Trend Micro will become unresponsive when attempting to start up and I will have to wait awhile before they all load.).  After I get through all of that the programs I start myself will randomly become unresponsive; this happens about every 30 seconds followed by 10-15 seconds of the program not responding.

I have blew out all of the dust that had settled with compressed air, my OS (Vista) is completely up to date, and my last scan was two days ago which removed 1 nonserious threat.  However i've been having this problem off and on for a week or two.  Running SpeedFan i've noticed my GPU being quite hot so i've set up a thirdparty fan to blow cool air into my open case which seems to help a bit. 

GPU: 64C (without the third party fan it almost hits 80 idle)
Temp1: 39C
Temp2: -128C(?)
Temp3: 38C
Core: 38C

Also while monitoring the performance tab in Windows Task Manager I will get random CPU Usage spikes jumping from 4% -> 30+%.

I've ran multiple virus and spyware programs and removed every threat they found but it still gives me problems.

Hi-Jack This log can be posted if needed.  Thanks for your help in advance.

[Kurtiskain]

What kind of hard drive activity is there when it freezes?

[Mosrael]

I'm not 100% on what you're asking.  The only thing i've noticed when it's acting this way is that folders take a longer time to show their contents and the Start bar that shows the clock/icons/open files freezes until it becomes responsive, the desktop icons still light up and are able to be opened, however, when I move my mouse over the Start bar or the unresponsive program I get the loading circle that vista uses.

[Broni]

Try to remove that video card altogether, and revert to on-board video for testing purposes.

[Karnac]

Don't post your Hi-Jack This log in this thread, but I think that's where you may find the problem.......Post it in the Spyware and Virus thread......I think that that 127C may be the default for "no sensor found" in speedfan.