Question about Computers & Internet
This sounds like a physical keyboard fault. If your machine is in warranty, get the manufacturer to replace it. If not, see if you can get a local service company to fix it if you are not confident of doing it yourself.
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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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
Reboot the 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 Menu
Please select an option:
Safe Mode with Networking
Safe Mode with Command Prompt
Enable Boot Logging
Enable VGA mode
Last Known Good Configuration (your most recent settings that worked)
Directory Services Restore Mode (Windows domain controllers only)
Start Windows Normally
Return 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: type
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:
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*)
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 line
Basic BIOS password crack - works 9.9 times out of ten
if still no joy
Remember that laptops can be trickier, especially if it's a newer model.
If it has a security chip on the motherboard forget about it.
You either have to physically remove the chip or contact the mfg for the "master" password. If you can boot up off of a cd or floppy try any of these methods:
Create a Win98SE bootable media "or anything that lets you boot into MS-DOS" and boot off of it.
When the A:\> prompt appears type debug and press enter.
You will then only see a "-".
Type o 70 2E "include the spaces" and press Enter.
Type o 71 ff "include the spaces" and press Enter.
Type q and press Enter.
hope this helps
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