Why wont boot

While your system is still booting from start, keep hitting F11 to get past that point then proceed with the system recovery.

Restart your computer
During the boot process you will see on the screen to press a certain key to enter setup

Press and hold that key during the boot up process to enter BIOS using the arrow keys load failsafe defaults or load optimized defaults press escape then press f10 to save to cmos to restart
hope this helps you

sony says it's F2

During the boot process you will see on the screen to press a certain key to enter setup
Press and hold that key during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart
or
During the boot process tap the f8 button three times this will boot into safe mode where the only things working will be your mouse and keyboard enabling you to attempt to repair your computer
hope this helps

When booting up your computer you can access this option before startup.
Right after turning computer on, before it even hits the boot screen logo with Windows,
Press Ctrl+F11
This should open up the menu for you to access system restore/factory setting reset.

Hope this helps! This solution may vary from computer to computer, so if it doesn't work for you, provide me with specifics and I should be able to find an exact answer.
Best of luck :)

make sure there are no disk's in the drives cd/dvd,3 1/2 " floppy
During the boot process you will see on the screen to press a certain key to enter setup
Press and hold that key during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart

hope this helps

is your hard drive full it sounds like it ok reboot your pc hold the delete button and you will be in the bios find your boot sequence and make your cd rom the first then hard drive second and 3rd and 4th what ever you want then put in you cd save and quit your bios and it will ask you if you want to boot off the cd you say yes if this does not work hold the f8,f9,f10 till you see a screen that says you can boot in safe mod do that and if your hard drive is full try deleteing some larg files or do a disk clean up right click your hard drive click go to the bottom of the list and look for tools and do a disk clean up i hope this helps

if you want to restore the computer to the factory settings.
restart the comptuer. immediately hold down the CONTROL key and start tapping F11 key.
Note : all of the data and software would be lost. Your computer will be restored to factory settings like a newly brought system.
IF this does work then go to bios, and make cd rom as the first boot devices, hit f10. now, hit "escape" once and select, "save" and hit enter.
Now, comptuer will be restarted.Now,start tapping space bar, It will boot from the disk.
else restart the computer and again start tapping spacebar at the startup.

ok, press f8 key as the system is booting up, this will put you in safe mode,

if the system boots okay goto command prompt mode and type chkdsk /r to repair any files etc ,

Try booting up again, if the problem is the same then it a startup file that need repairing so goto safe mode, command prompt type bootcfg etc and try repairting it that way, us e the help command to point you in the right direction.

Regards
GeWiz

Attempt to boot the machine in Safe-Mode.
While powering up continuously hit F8.
You will get a Boot Option Menu
Select Safe-Mode boot

If this works for you, you should use MSCONFIG to remove some start up items.

Start > Run > MSCONFIG and then go to the Startup tab and un-check entrys of programs you dont need starting up in the begining.

As far as what was deleted, this could be these simple steps.

Let us know if you run into any bumps
Good luck