We are all familiar with this problem: we turn on our Windows PC and instead of the familiar boot screen we see nothing but a black screen with some kind of cryptic error message. Most PC users feel quite helpless in such a situation and do not know what to do. The following way shall give a few helpful tips on recovering or Windows PC that does not boot properly.
First of all, you should verify that the PC is actually connected properly, has power, and that all the basic hardware works properly. The hard disk should be revving up, and the LED lamps should be lighting up.
Also, you should be getting a picture on your monitor screen. If that is not the case, you should verify that the monitor cable is properly attached to the graphics card port and the monitor itself. Once you have done that, the next thing to worry about is whether you get to the BIOS screen. If you do not, then in all likelihood you have some kind of hardware issue – for example a problem with the RAM, or a mainboard error. If you can see the BIOS screen you should touch Del or some function key, for example, F8 or F10, to go into the BIOS and reset it to the default settings. If you have recently installed hardware or changed settings in the BIOS it is best to revert them to the original condition. Next, if you're sure that the BIOS settings are okay, you should watch out for the error message that is a Windows is producing and when booting up.
At this stage, depending on what the error message actually is, you have a few choices. If the error message is related to the boot loader configuration, you probably have a good chance of fixing it by using one of the powerful Windows recovery software tools available nowadays, such as Spotmau Power Suite 2010. This is a complete software suite which can rightfully be considered the ultimate Windows boot disk. It contains tools for restoring the Windows boot section, repairing windows partitions, recovering lost passwords, retrieving erased data, and a good deal more.
The way you use the tool is by getting an image of the CD and creating a bootable CD which you then can watch your PC from and either recover your Windows system, or perform any other maintenance and repair tasks.
After booting from it, you see a menu with a selection of options. For recovering a Windows system without hardware problems, you can select the 3rd option from the top (recover Windows), and pick the version of Windows you have. The rest happens automatically.
Alternatively, you can use it to backup data from your system partition, if you do not have the original Windows CD handy, or retrieve a lost Windows administrator password.
Source by Michael J Johansson