hello i installed win developer preview yesterday and tryed to install hp wireless assistant but it required net framework so computer started to download it by windows update but i canceled downloading and downloaded ne framework from microsoft site and every time i try to install it or wireless assistant i get this message so please help there is no wifi and bluetooth

Try the method in the link but I am not sure it will resolve the problem as this fix is actually for Windows7:
How To Fix 0x80004005 Error?

thanks alot it worked great after downloading errorend which in your link

I'm glad it worked for you. Thanks for letting us know the outcome.