Hello,there is an unusual problem with my pc and i need a fix.My hard disk to pendrive copying speed all of a sudden dropped.now i am getting only around 5-7 mbps.now for filling any pendrive it takes double or even triple the time compared to the past.but there is no problem when copying from pendrive to harddisk.i completely formated the hdd,reinstalled OS,tried different os(xp,xpx64,win7etc), its still the same.my system configs are 1gb ddr2 ram,intel dual core e2140,160 gb segate sata2,intel 82945gcnl chipset,nvidia 8400gs 512mb ddr2 64bit.can it be the problem of motherboard???