Hi, I have been receiving the following error when I boot my laptop with Windows7. Failed to connect to a windows service. Windows could not connect to the system event notification service service. This problem prevents standard users from logging on to the system. It takes a long time to start and shut down the system, the sounds do not work, the theme is changed to classic. I have tried system restore, but there are no previous restore points on the system. I have also tried sfc /scannow, it displayed some errors found but failed to repair them. I have also tried to repair the system using Windows7 DVD, but nothings working out. The error keeps on appearing many times even if I restart the system. After 10-15 times of rebooting the problem issometimessolved! Is there any solution to this problem or do I have to reinstall WIndows7 all over again...? Please help me out. Aditya

You may refer the following article to troubleshoot. MPECS Inc. Blog Windows Vista - Error - Windows could not connect to the System Event Notification Service service Although it is for Windows Vista, you can refer it in your Windows 7 issue troubleshooting. Important Note: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.