1) go do backup dvd

2) reformat (can refer how to do backup and factory reset in asus manual book)

3) delete useless bloatwares http://forum.notebookreview.com/asus/38068...ware-guide.html

optional ( do backup registry file and clean error registry entry by using CCleaner)

4) uninstall ATK and reinstall back (dunno why some fn key will nt work after uninstall some bloatwares, after reinstall working fine again)

5) use msconfig to unable some useless startup

6) install 'Windows Performance Tool
Download WPT: http://msdn.microsoft.com/en-us/performance/cc752957
Instructions from sarf2k4 (at the bottom): http://forum.lowyat.net/topic/1606856/+1940#entry40319554

7) Use Asus Fast boot to delay some program startup

then you could enjoy around 2X ~ 4X sec boot up time

ps. thx to all sifus in this forum who share and guide to achieve fast boot up time