Slow Computer Help needed

[johnsford]

hello to all im not to good at spelling so bear with me thanks.
wen i trun on my pc it is slow it takes 2.30 just to get to the the windows logo it loads up the desktop good still it ues to take only 45sec to get to the windows logo what will fix this is like my hd just stops to think all some thing i have flashed my bios and got ned hd and new 512 but still the same i am stumped any help wood be good thanks oh im uesing windows xp home and Mrb is asus p5gd1-vm i have all so tryed seting bios to faktry setings and have replaced battery hope yous can under stand me ..

hi there any help on this wd be good as iv been on this for 2 weeks now
ok here goes wen i hit the power butten it takes 2.30sec to get to the welcome sign it ues to take 30sec now it sits on the mrb screen for 1.17sec and stops again after the windows logo the 1 befor the welcome screen for 1.13sec and then loads desktop this is what iv done to try to fix it flashed bios set default boot oder reformatted new HD new 512 mry still the same ..now i have got a new bute hammer thats where im at (windows XP home)asus mrb p5gd1-vm