I have acer aspire,i usually put my password on it for security,when i open it turn on emmediately then asking for my password when i start to type the key board doesnt work and when i press the power botton off it remains power on.can u help me please? thanks

No Boot disk found - usually indicates the HDD is not located.
so you need to validate the HDD is inserted properly, and locked into the HDD slot. securely,
Blue Screen asking for password, could mean several things,
basically you need with both errors, take to a good Repair Tech and have this looked into... PASSWORD can be either for BIOs or HDD,
or the system went into LOCKED MODE and password is needed to UNLOCK it.

Try removing the main battery and unplug the power, then hold the power on button down for 30 seconds, if this does not work, remove the cmos battery for 30 seconds to reset the bios

Forgot Acer Aspire password? Here I list 2 wonderful Windows password reset tool to help you reset Acer Aspire password.
1. Windows Password Recovery Tool 3.0
2. Windows Password Key 8.0

when you start your pc enter the bios setting pressing F2 normally.. once there you can find the security option and bios password is in there type the password you would like and press F12 nomally to exit the bios with saving

when opening your windows it will ask for password.......then press at+ctrl+delete then a nnew window will open again asking for user name and password then in user name type-administrator and in password leve blank and password then press enter windows xp will open

YOu can reset bios password with 2 method.
(1) open back cover of laptop then find motherbord .Pull cmos cell from motherbord for 15 minutes then again put it in it's position .then it not ask for password.
(2)You can clear password with jumper settings find jumper on motherbord named clear cmos it has 3 pin .1-2-3
Put jumper in 2-3 position then again put it in 1-2 position then check .
Let me know if you need more assistance.
Thanks.

If it is asking for a password upon startup then someone put a password on your CMOS. Unfortunately, unless you can find out what the password is, then the only way to clear it is to remove the battery in your motherboard. The battery is what keeps the information in CMOS when the computer is turned off.

now, my computer start windows and don't have type arrow so please help me and what me do? thank you.

my father bought a second hand laptop from canada . when i started it ask for a password means somebody made the password and gives hint as white . i tried a lot but password doesnt open. my father also not got any password so there is no use without password.what should i do ??

Start/Control panel/user accounts. Look around this facility My computer/Help/type in the field -passwords See what you get also start/search type in the field *.pwd see what you get