when i start my computer, the cpu light turns on... but monitor is blank,after 1 min it only starts the booting.. nothing shown at that time.. just behave as an sleep computer... how i fix this?

Could be RAM or HD about to fail. Try booting to a Live Linux CD. I find Puppy Linux 431 simple but good for diagnosis.
As this runs between the RAM and CD only it will narrow things down. You can also access your HD from it (and copy your important files onto a flash drive).Always pop back and let us know the outcome - thanks
start by unchecking everything in startup in MSconfig EXCEPT your AV and see if that shows an improvement Some HELP in posting on Computing.net plus free progs and instructions 7 Golds
Hi, Try running Hardware Diagnostics on your computer.
If the diagnostics pass, limit how many programs run at startup by using “Autoruns”.
Auto Runs: http://technet.microsoft.com/en-us/...Thanks & Regards
Debbie B
#iworkfordell
