problem with intall sp1 64bit error code 800f081

i have win7 64bit home premium and i try to install sp1 but i cant.after 45 minute this massage is shown: windows encounter a system file error(code: 800f081)
and i try to download and install system update readiness tool but a cant cause this error when i try to run .msu installer :
"intaller encountered an error 8007065e
data of this type is not supported"

in the download page of microsoft, the system update readiness tool reguirement is win 7 sp1 and i dont have sp1
what should i do
please help me
and i know, sorry for my bad english

hi
thanks for reply
i try both way (win update & download file) and no result
also i try to repair my system with sfc in two way
1- in windows
2- in boot with system repair disk
and both two way could not repair some files. i don't know what is this mean:

2012-05-23 11:48:32, Info CSI 000002ea [SR] Cannot verify component files for Microsoft-Windows-Microsoft-Data-Access-Components-(MDAC)-ODBC, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_INTEL (0), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral, manifest is damaged (FALSE)

Hello ppoliut and welcome to Seven Forums.

Check your computer for malware. Run a full scan with your antivirus suite. Then try using a couple of these free on-demand scanners. (No antimalware product is 100% effective 100% of the time so it's always a good idea to double check for malware.)

Windows Defender Offline (not to be confused with Windows Defender!) | Superantispyware | Hitman Pro | ESET | Comodo Cleaning Essentials

Try running a System File Checker scan from an elevated command prompt (option two, this tutorial.) The scan will look for damaged or corrupt system files and try to repair them. If any problems are noted, run the scan at least 3 times, rebooting in between each scan.

SFC /SCANNOW Command - System File Checker

Make sure your computer has all other Windows Updates installed and try the SP1 again. Please post back if any of this helped. (Some of the scans could take an hour or more so be patient.)