A new service pack always brings some excitement, but unfortunately it also brings new issues too. Just a few days ago, Windows 7 Service Pack 1 was released
, and there have been already reports of installation problems. SP1 brings 796 hotfixes, most of which weren't released to Windows Update. Additionally, SP1 also brings improved HDMI audio performance and support for AVX instruction set that was introduced in Intel Sandy Bridge processors. So we can't blame you for wanting to install SP1 as soon as possible, but if you're afraid of installation issues, or already suffering some – we're here to help.
1. Make sure the installation files came from a reputable source like Microsoft or NGOHQ.com
. We highly recommend that you avoid torrents or any other non-legitimate source. Listed below are the checksums so you could verify the files you have are 100% legitimate and not corrupt. Windows6.1-KB976932-X86.exe
2. Ensure your system is clean of viruses, malware and other crapware. If you don't have an antivirus installed, check out our downloads section to obtain a free one.
3. Ensure your system files aren't corrupt by using System File Checker. Run » sfc /scannow
4. Scan your files and partitions for errors with chkdsk. Run » chkdsk c: /F
5. Scan for inconsistencies by using System Update Readiness Tool
for Windows 7. Download » Execute » Scan for inconsistencies
6. Clean your system of temporary files and other junk. We highly recommend that you use CCleaner for this task
7. Run a defrag on your drives. Start Menu » All Programs » Accessories » System Tools » Disk Defragmenter
8. Clean Windows Update cache files. Run » net stop wuauserv » Navigate to Windows root folder » Delete the SoftwareDistribution folder » Run » net start wuauserv » Control Panel » Windows Update » Press on Check for updates to recreate the cache
9. Uninstall all drivers. Control Panel » Programs and Features
10. Uninstall antivirus and firewall. Don't disable it temporarily! Remove it completely. Control Panel » Programs and Features
11. Disable all Non-Microsoft services and startup applications. Run » msconfig » Press on Services tab » Check Hide all Microsoft Services box » Press on Disable all » Press on Startup tab » Press on Disable all » Ok » Reboot
12. If you're using a slipstreamed version of Windows 7 by vLite, you must delete vLite's registry entry in-order to install Service Pack 1. Run » regedit » HKEY_LOCAL_MACHINE » SOFTWARE » Right click on vLite and choose Delete
13. If you have ever used Driver Sweeper and now you're getting: "Service Pack Installation Cannot Continue (one or more system components that service pack requires are missing)". Read and follow those instructions in-order to solve this problem
14. If all of the steps above haven't solved your problem, try looking for clues as to what is causing the installation to fail (such as missing files/repositories or error codes) inside the following log files: C:\Windows\WindowsUpdate.log
We hope that our Service Pack 1 troubleshooting guide was useful for you. And if you discover any other workaround or issue, please let us know by posting a comment below.