Question about Compaq (A7486A)
Most common reason for this would be defective power supply, if it is less than 1 year old, may still be under warranty. If older then you can usually find replacement power supply $40+ at local computer store. Not to difficult to replace, average tech could swap it in less than 15 minutes. Can test it with one of these: http://www.antec.com/Detail.bok?no=429
Posted on Jul 27, 2007
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When you boot up to the log in screen type in administrator as user to log in if you cant log in
during the boot up process you will see on the screen for a short amount of time press a certain key to enter set up press and hold that key during the boot up process to enter BIOS using the arrow keys scroll down to set user password or supervisor password you can change or remove your password from there
The most common way that we know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing the Cmos battery for 30 minutes from the motherboard.
Another way is to reset the clear CMOS jumper on the motherboard itself.
Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip. So by cutting off cmos the battery power, the BIOS/CMOS settings will be erased.
cmos battery Under the keyboard or bottom of laptop - If you are working on a laptop computer the location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment. Although on some motherboards the Cmos battery is soldered in
Often many users will leave the administrator account alone or have other accounts with administrator rights. If you're not logging into the computer as administrator or have other accounts follow the below steps to reset your other accounts password.
Reboot the computer into Safe Mode
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 Advanced Boot Options screen appears.
Select the Safe Mode option using the up and down arrow keys, then press the ENTER key. Choose "Windows XP Home/Professional", depending on the version of the operating system.
Press ENTER. Shortly, the welcome screen should show.
Log in as "Administrator". Click Yes to not use System Restore Mode.
Click the Start button. Choose Run and type in "control user passwords" (without the quotes). Click OK.
Select the "Administrator" user. Click Change my password. Enter a new password in the corresponding text boxes. Click OK. Write this password down and store it in a secure place Close the User Accounts window and restart Windows.
In User Accounts select the account you wish to change the password for, click change password and then enter the new password or click remove the password to remove the password from the account. Hope it helps
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