As just an average Windows 7 user, it's really annoying encountering a Windows booting issue. When this happens, logging out doesn't help. There's no error message or instructions giving you another option. Sometimes, you only get a black screen, or it gets stuck after you leave the "Start Windows" screen. So you see, it can happen a lot and at any time so it's handy to know how to handle with this problem when you encounter it. Here's how:
Windows 7 won't boot: black screen, blue screen, or a 'no error' message
The first method is to switch the computer to safe mode, and try to find out the problem. Then fix it. That's the way we've used more and more. Sometimes it works, and sometimes it fails. If you want to solve the problem completely, the best way is to get a professional Windows 7 boot disk, which can totally remove your loading problems.
Now, follow the steps below to do what you need.
Step1. Create a bootable CD/USB with LiveBoot
Install LiveBoot on a computer working well and prepare a blank CD or USB drive. Run LiveBoot and insert the CD or USB to the computer. You only need to perform one click to Burn a bootable CD or usb drive.
Step2. Boot your computer from LiveBoot CD/USB
Insert the LiveBoot CD or LiveBoot usb drive into the problem computer, and then restart your computer. Before loading Windows, press F12 to go to the Boot Device Menu, and choose "Onboard or USB CD-ROM Drive". Then you'll get the screen as follows. Select to boot from LiveBoot.
Step3. Fix "Windows 7 won't start up" issue safely
After starting up your computer, go to "Windows Recovery" and choose "Boot Crash Solution" from the Recovery Center. Here you can get different solutions for your Windows 7 boot issue. You can try the methods one by one until you can enter Windows 7 successfully.
Method1. Run Microsoft System Restore to restore your computer to last working point.
Method2. Run Registry Recovery to restore your registry to its initial status, which will fix crashes caused by very serious system, software or hardware conflict.
Method3. Run a Registry Editor to fix individual registry conflict or remove virus key.
Method4. This is the final solution if all above doesn't work. Run Windows Key Finder and Office Key Finder to retrieve your Windows CD key and Office key, and then reinstall your Windows and Office. You also can back up your data here first.