how can i fix error 80072efd?

Have you tried this? Windows Update error 80072efd - Windows Vista Help

Run cmd.exe with administrative previlliges (right click on this file as admin) and type

netsh winhttp reset proxy

+restart

Try also reset IE and disable bad add-ones http://www.vistax64.com/tutorials/114310-internet-explorer-reset.html

Stop for the moment Windows Update service,remove C:\Windows\SoftwareDistribution folder and try again install updates.You can also try install updates from Microsoft Download Center (not from Windows Updates)

Thank u for ur reply. I came across the link u sent me a few weeks ago and did everything but it didnt work. I ran the file like u told me n i got aresponse saying "no proxies" i restart but i still nothing. Not only i can not dowload updates but i can not download anything to my laptop. This is sooooo fustrating!! I had sent my laptop 3 times for repairment to the factory (hp) and everytime they sent it with more problems. I hate windows!!!!!! their support ppl sucks. Im def turning to a Mac but for now i really really need to fix this thing!!
On a personal note i got to say after all the problems i have had with this laptop n the stupid winfows vista.. Windows is a piece trash with all this stupid problems n virus, and their support dept is a waist of time, is ridiculous!
Pls if anybody can help me i will always appreciate it.

Try this How do I reset Windows Update components? and this Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, and for Windows 7

Windows is a piece trash with all this stupid problems n virus, and their support dept is a waist of time, is ridiculous!

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Viruses also can cause this issue.Burn this DrWeb livecd http://www.freedrweb.com/livecd
burn it boot it & scan

but i can not download anything to my laptop

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What happens when you try to download something from internet?