Re: possible causes for a slow computer
spyware, virus and lack of hardware. you ran a scan so there isnt any viruses. could be spyware because some anti-virus software doesnt recognize it.but you do have a lack of hardware. the P4 is really out o' date, same with the RAM and hard-drive. what model of Dell and what year is it? if its not too out of date you could upgrade all 3 of those. I think the you have a MPGA 478 socket so you could upgrade to a 2.8 Ghz P4, but im not sure.
AMD Phenom II X3 720 BE 3.6 G / 4G OCZ GDDR3 Urban Ops / Zalman 92mm Cooler / Asus 790GX / Sapphire Radeon 5770 / Corsair 750TX PSU / Cool Master Centurion 5 case / 23 inch Dell Monitor