Storage Device (PSP) Keeps Shuting Down My System

Whats up, I recently re-formated my hard drive in order to get rid of some pesky embedded virus that was in my IExplorer. My computer started going through the update process, sp1, sp2, ect. Now, when I go to plug in my PSP, in usb mode, it recognizes the storage device but when I get to transfer a folder thats at least 600mb. It shuts right off. Is there a missing file or process other than MSUpdate's that I need to stop this from happening?

Platform: Win XP Pro
Processor: P4 768 MB SDRAM PC133
Intergrated Chipset MB: P4VXASD2+ (which has a 4in1 driver on ecsusa.com)
Graphics card: ATI Radeon 9200 series with Catalyst Program.
AGP: 4x
Hard Drive: 60GB Western Digital