Restart your computer repeatedly tapping the f8 key to enter safe mode while the screen is black once in safe mode where the only things working will be your keyboard and mouse allowing you to attempt to repair your computer
As the computer is booting repeatadly press the F8 key as the computer is booting
If done properly the user should get to a screen similar to the below screen.
Select the option for Safe mode command prompt only
Windows Advanced Options MenuPlease select an option:
Safe ModeSafe Mode with NetworkingSafe Mode with Command Prompt
Enable Boot LoggingEnable VGA modeLast Known Good Configuration (your most recent settings that worked)Directory Services Restore Mode (Windows domain controllers only)Debugging Mode
Start Windows NormallyRebootReturn to OS Choices Menu
Use the up and down arrow keys to move the highlight to your choice.
select safe mode with command prompt
Then type at the C:\> prompt: typeDEBUG and hit Enter. You'll see a dash (-) at the DEBUG prompt. Now type: o 70 2e which will show as -o 70 2e at the DEBUG prompt. Hit Enter. Then type: o 71 ff and hit Enter. Finally type: Q and hit Enter one last time to quit DEBUG back to the C:\> prompt. Now you're ready to reboot your PC, and press the appropriate key or key combo (look it up in your motherboard manual if you don't know it) to access your BIOS Setup.
Youll notice the password is gone.
if this fails try typing
At command prompt type debug you will get a - prompt where you can type the following (<enter> means press enter, not type enter*)A <ENTER>MOV AX,0 <ENTER>MOV AX,CX <ENTER>OUT 70,AL <ENTER>MOV AX,0 <ENTER>OUT 71,AL <ENTER>INC CX <ENTER>CMP CX,100 <ENTER>JB 103 <ENTER>INT 20 <ENTER><ENTER> just hit enter on this lineG <ENTER>Q <ENTER> Basic BIOS password - works 9.9 times out of ten
if this fails you will need to
Select safe mode with networking to download
you could download all of these or just one save them to a usb drive for later use if one fails to remove the password
http://www.tech-faq.com/reset-bios-password.html
http://majorgeeks.com/CmosPwd_d239.html
A CMOS BIOS password recovery tool
Editors note: This tool should only be used by experienced computer users. Please see the enclosed read me if you would like to run it from Windows. Failure to follow instructions (from Windows) will cause your anti-virus to flag this as a virus.
hope this helps
Test all leads that attach to your hard drive including electrical extensions EIDE SATA
the leads from your ((motherboard to your hard drive)) make sure they have a secure dust free connections and are not faulty computers need power and data to travel through every working device and to continue its cycle and to have an end so any faulty leads will end up with a computer error Click start control panel administration tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! or a red x right click select reinstall drivers You might need to upgrade your graphics card drivers you might have to remove your graphics card to make sure the socket is clean restart your computer the reinstall it this should activate found new hardware wizard if your computer came with a mother board disk the drivers could be on it click start control panel display desktop you can select a different desktop from the drop down list or a browse button where you can select different pictures this may vary depending on your operating system also you can change the settings for more or less pixels or from the drop down list pick the appropriate level of color range or troubleshoot also select advanced then general dpi normal size,larger size or custom settingsalways click APPLY after making any changes hope this helps
check the leads that attach motherboard to hard drive make sure they have secure dust free connections make sure your graphics card is securely seated with no dust built up or in the socket
if you remove your graphics check the socket to make sure its dust free
restart your computer then reinstall it this should activate found new hardware wizardverify that the keyboard is connected properly to the computer by turning off your computer and then disconnecting and reconnecting the keyboard to the computer
Ensure that there are no stuck keys on the keyboard. If all keys appear to be ok and you have a standard desktop computer with keyboard, turn the keyboard over and gently hit the back of the keyboard to loosen any dirt or hair that may be stuck in the keyboard.
Bad keyboard
Try another keyboard on the computer to verify that the keyboard has not gone bad.
Bad PS/2 or AT port
If all of the above solutions are not able to resolve your issue it is likely that the port on the back of the computer may be bad and the motherboard or I/O board may need to be replaced.
hope this helps
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