My comouter runs wicked slow!!!

Well I have had problems with my machine but this one has me stummped, my computer will not run any faster than th speed one smell and I have no I dea why, I have taken every piece of hardware out oft the machine replace the power supply tried a different hard drive move my ram to different slots
unplugged fans to see if they were over draining, I have a 500 watt power supply, amd processor 1 gig of ram, 160 gig hd, 2 cdroms and nothing else Im not sure what happened all the voltages look good, no over heating, I can't even reload the macine without it taking all day, Im out of ideas can anyone help me?!?!?!?!?!?!?!?!?!

 

perhaps its not a hardware problem. It could be malware (malicious software.) Have you noticed any other symptoms? Check out the malware forum and the READ AND RUN ME FIRST thread.