Windows 7 will not start - Sony VAIO VPCEG Laptop 14.1" i3 2.1GHz 4GB 500GB W7 Home White PCG-61A11L

If you have forgotten your Windows 7 password and you are on a domain, you need to contact your system administrator to reset your password. If you are not on a domain, you can reset your Windows password by using a password reset disk or by using an administrator account.

To create a password reset disk, follow the steps mentioned in the Microsoft support page below:
(Note: Before starting with the steps in the following link, make sure that you have selected "Windows 7" in the drop-down menu at the start of the page).
http://windows.microsoft.com/en-in/windows/create-password-reset-disk#1TC=windows-7

To reset your Windows password by using an administrator account, follow the steps mentioned in the Microsoft support page below:
(Note: Before starting with the steps in the following link, make sure that you have selected "Windows 7" in the drop-down menu at the start of the page).
http://windows.microsoft.com/en-in/windows/reset-windows-password#1TC=windows-7

(Important: If you forget the administrator password and don't have a password reset disk or another administrator account, you won't be able to reset the password. If there are no other user accounts on the computer, you won't be able to log on to Windows and will need to re-install Windows.)

To know more about resetting Windows 7 password, refer to the following Microsoft support page:
http://windows.microsoft.com/en-in/windows/what-do-forget-windows-password#1TC=windows-7

GuruAid.com

Hello here is the homepage:

http://www.asrock.com/mb/VIA/P4V88/?cat=Download

Your mainboard is too old to run windows 7.

Continue using windows xp, or buy a new mainboard that supports windows 7.

Good luck

Repair the Windows 7 OS with the Advance Boot Option. Press F8 key when starting Windows 7, then in the Advance Boot Option menu choose Repair Your Computer. Insert Windows 7 DVD in DVD drive to repair. then in the system recovery option choose Start Repair. follow the instructions there. After this the Windows will start normally.

Not sure what you have done so far. You need to divide your hard drive into two sections. Install XP first on to one section. Then use a program to manage your computer start up, the one I use is called Easy BCD this is a free program and works great. Once you cut your hard drive and install XP make a copy of your start up partition. Install the Easy BCD program and make a back up again. Then Install Win 7. Then on the Win7 side install the Easy BDC program and set up the menu choices. I run a 3 way boot with XP and Ubuntu. Hope this helps Fix Ya up.

Here are some discrete steps you shall also take besides fixing your Windows 7 registry which is inevitable for safer and stable computing:
* Conduct an antivirus and antimalware scan. Fixing for malwares after a registry scan gives an extra protection to the PC and saves PCs from lots of dangerous infections.
* Start Windows 7 in safe mode and restore your PC/system to the previous date after which you received the Windows 7 updates. It is believed that some updates may be behind these screen issues in Windows 7.
* Adjust your display settings since the wrong settings may also cause the Windows 7 black screen also called the blank screen. You can do this by starting Windows in safe mode.
Follow all the guidelines and start from registry repairing scan for Windows 7 to fix Windows 7 black screen.use registry cleaner reg in out to solve the issue

The problem of black screen can also happen in other versions of the Windows. However, the symptoms and effects of the problems in all operating systems are almost same. For instance, when a user starts his Windows, everything goes fine. But when he logs into it there awaits a black screen instead of the normal desktop layout. An average computer user finds it very disturbing and has no clue how to fix Windows 7.
However, the best way to find a solution to this problem is to fix the registry errors in your computer which become the cause of all major Windows errors and crashes. The registry in Windows 7 is a very important component of the entire operating system and it stores information about the Windows settings. If these settings are not adjusted properly then there start to appear strange computer problems such as Windows 7 black screen.
Here are some discrete steps you shall also take besides fixing your Windows 7 registry which is inevitable for safer and stable computing:
* Conduct an antivirus and antimalware scan. Fixing for malwares after a registry scan gives an extra protection to the PC and saves PCs from lots of dangerous infections.
* Start Windows 7 in safe mode and restore your PC/system to the previous date after which you received the Windows 7 updates. It is believed that some updates may be behind these screen issues in Windows 7.
* Adjust your display settings since the wrong settings may also cause the Windows 7 black screen also called the blank screen. You can do this by starting Windows in safe mode.
Follow all the guidelines and start from registry repairing scan for Windows 7 to fix Windows 7 black screen. The best available tool to repair registry and fix PC errors such as this is Reg In Out.

you have to do clean a install of windows 7 ....if you want it as a secondary operating system. If you want to upgrade it from windows vista to ...so you have to do the install from the explorer.....I mean when you have booted to the windows vista....then insert the windows 7 dvd and do the install....
this way you can tackle the problem