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This is in case you cannot boot into windows but you can get into bios:
Open your disk drive. Insert windows operating system disk into your disk drive. Restart your computer.
If you can get to the stage where you can see see bios entry key then
keep pressing whatever key it is that you press to get into bios at
start up.
Select the option that let's you choose the drive to boot from, mine is
in advanced bios options. then go to either something like bios features
or change boot drive.select whatever drive represents your CD-ROM drive
and select it to be the first boot drive.
then save exit bios, I do this by pressing escape then Y to save and boot from the rom drive.
This will let you restart your installation of windows and
re-format the drive...
If you can boot into windows:
Then either re-format the drive and delete the partition when you do or...
Run a recovery of the system by installing your disk and letting it get
to the stage wher it asks what action/task you want to perform and
press r when prompted then follow the prompts to repair the files. This
might not work though,
you could even try running a disk check as maybe a lucky chance of repair if you can get into windows.
If your PC keeps trying to boot from the CD drive after repair then
re-enter bios at start up and change your hard drive back to first boot
device to boot into windows.
It's better if you re-format though as repairing windows can be a little tricky.
In case nothing worked to reset BIOS password (taking battery out, reseting jumper J1) you can use thrid party software from Hiren's Boot CD to reset the password. You've got Kill CMOS on there, for example which wipes out CMOS. Here's the download link to the entire CD: http://www.hirensbootcd.org/download/Hirens.BootCD.12.0.zip
If you cannot access the machine after if has been powered up, it is
still possible to get past the BIOS password.
The BIOS password is
stored in CMOS memory that is maintained while the PC is powered off by
a small battery, which is attached to the motherboard. If you remove
this battery, all CMOS information (including the BIOS password) will
be lost. You will need to re-enter the correct CMOS setup information
to use the machine. The machines owner or user will most likely be
alarmed when it is discovered that the BIOS password has been deleted.
On some motherboards, the battery is soldered to the motherboard,
making it difficult to remove. If this is the case, you have another
alternative. Somewhere on the motherboard you should find a jumper that
will clear the BIOS password.
If you have the motherboard
documentation, you will know where that jumper is. If not, the jumper
may be labeled on the motherboard. If you are not fortunate enough for
either of these to be the case, you may be able to guess which jumper
is the correct jumper.
This jumper is usually standing alone near the
battery. If you cannot locate this jumper, you might short both of the
points where the battery connects to the motherboard.
If all else fails, you may have to clear the BIOS password by
resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your
motherboard.
Many RTC's require an external battery. If your RTC is one of this
type, you can clear the BIOS password just by unsocketing the RTC and
reseating it.
A hard drive password can only be removed by the person who knows the password because then it can be cleared thru the BIOS.
Otherwise the only other way around it is the buy a new hard drive so it doesn't have a password and you can then reinstall the operating system on the hard drive and then put the drivers on it and any other programs that you want on it.
Fadeel,
You enter the BIOS on the M400 by pressing the ESC key during the POST operation.
Let us know if you have any other questions and please don?t forget to rate this post.
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