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Your motherboard keyboard controller is not initializing completely. The three LEDs shows the keyboard is powered and initializes, but the motherboard keyboard controller looks to be bad. I assume the keyboards work on other computers. Make sure there are no jumpers on the motherboard for the keyboard. You said the video screen is stuck on CMOS BIOS logo and is trying to continue with a missing keyboard or keyboard error. So since it got to the BIOS screen, pretty much everything else came up.
1 Turn on the computer.
2 As the computer starts, press <F8> on the keyboard until the Advanced Boot Options menu appears on the screen.
You must press <F8> before the Windows logo appears on the screen. If you press <F8> after the Windows logo appears on the screen, the Advanced Boot Options menu will not appear on the screen. If you do not see the Advanced Boot Options menu, restart the computer, and then repeat this step until you see the menu on the screen.
3 Press the <Down Arrow> on the keyboard to select Repair Your Computer on the Advanced Boot Options menu, and then press <Enter>.
4 Specify the language settings that you want, and then click Next.
5 Log in as a user who has administrative credentials, and then click OK.
6 Click Dell Factory Image Restore.
7 In the Dell Factory Image Restore window, click Next.
8 Click to select the Yes, reformat hard drive and restore system software to factory condition check box.
9 Click Next.
The computer is restored to the default factory configuration.
10 When the restore operation is completed, click Finish to restart the computer.
The software is now installed as it was when the computer was first received.
usb or ps2 keyboard ? might need to be enabled in BIOS
If you want to use a USB keyboard to access Windows command prompt options, make changes in the BIOS (Basic Input/Output System), or to operate legacy operating systems, you must enable support for the device inside the BIOS.
Shut down the computer and disconnect the USB keyboard. Connect a PS/2 keyboard to the PS/2 connector port on the rear of the computer. Turn on the computer and press the "Delete" key several times as soon as you see the initial boot or company logo screen. Wait for the main BIOS setup screen to appear. Press the right or left arrow keys to move the cursor to the "Advanced" or "Advanced Settings" menu option. Press the "Enter" key. Move the cursor to the "Integrated Peripherals" or "Peripheral Configuration" menu option. Press the "Enter" key. Press the down-arrow key to navigate to the "USB Controllers" option. Press the "+" or "-" key to change the menu option to "Enabled." Move the cursor to the "USB Legacy Support" or "USB Legacy Function" field. Press the "+" key repeatedly until the value option changes to "Enabled." Press the "F10" key to save changes to the BIOS settings and exit the setup utility. Wait until the computer begins to restart and then press the power button and hold it for approximately four or five seconds. The computer shuts down completely. Unplug the PS/2 keyboard from the computer and set it aside. Reconnect the USB keyboard restart the computer. As soon as you see the initial boot screen, tap the "Delete" key several times and wait for the BIOS setup screen to appear. If you are able to access the BIOS setup screen with the USB keyboard, USB support is active in the BIOS.
Try restoring your system bios to factory default and this may fix your problem. If not- post again with results and we'll go from there.
Entering System Setup
Turn on your computer.
When the blue DELL logo is displayed watch for the F2 prompt to appear (black screen / white text).
Once this F2 prompt appears, immdiately press F2 .
The F2 prompt indicates that the keyboard has initialized and is detected. This prompt can appear very quickly. Watch for it to display as the screen powers up, and then press F2. If you press F2 before you are prompted, this keystroke will be lost. There is a small window of time to do this before Windows starts. If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft Windows desktop. Then, shut down your computer and try again to enter setup. At setup check your bios version. It may need to be flashed (upgraded). Select load factory defaults to see if that will resolve your PCI issues.
Don,t do that insatead: Entering the BIOS Setup menu
the BIOS Setup menu requires pressing a specific key at a specific
time. If you fail to enter the Setup menu on your first try, repeat the
following steps until you are successful:
Close all applications that are currently running and restart the computer by clicking Start
, Shut Down
, Restart the Computer
, and then OK
When the red Compaq logo or blue HP logo screen appears, press the F10
key on the keyboard to enter the Setup menu.
alternate to the above steps, especially if the logo screen disappears
too quickly to enter BIOS, is to shut down (turn off) the computer. Wait
30 seconds, turn the power on and press F10
at the logo screen.Reloading the default settings
Complete the following steps to reload the factory installed BIOS Setup settings:
In the BIOS Setup utility, select the Exit
Select Load Setup Defaults
Select Save Changes and Exit
and the Enter
key will also load the Setup Defaults).
the dreaded Blue-Screen of death.
Usually caused by:- Ram Failure ( memory Modules )
CPU Failure ( Processor Failure )
Hard-Disk faulty, not spinning et,c.
Cmos battery fault.
Missing/deleted/corrupted operating System files.
Possible Solutions:- remove cmos battery, from Motherboard for 10 seconds and replace. ( eliminates cmos/bios errors )
remove 1 stick of Memory ( Ram ) and test individually ( eliminates 1 or More Faulty sticks Of memory Or Slots )
remove, CPU Fan/heatsink, remove CPU and re-seat, re-grease with Artic-Silver or similar ( thermal-Compound ) replace heatsink/Fan. test.
Hope this points you towards a Sucessful repair.
Mike @ Compurepair. No-Links No-Nonsense Just Good Practical Advise :-)
1)unplug all the peripherals from the computer,press the power button and hold it,then connect the peripherals.
2)open the tower and try to reseat the ram and the memomy slot.
3)try to go to BIOS screen,if it gets stuck while going to bios,shut down the computer,disconnect the sata cable of the harddrive,try to boot the computer to bios without the hard drive connected,if it goes to bios properly with the harddrive cable disconnected,that means hard drive has gone bad.motherboard is alrite.
turn of your computer..
unplug all the cables...
press and hold down the power key which is on your cpu for atleast 5 - 10 secs..
after that ..please connect the power cable.. mouse.. key board. monitor and your internet cable..
and then restart your computer..
when you restart your computer keep tapping the f1 key (i hope this is for bios)..
restore to default over there.. press enter to save.. once done this would automatically reboot..
this should fix this problem...
please post your answers.. or comments...
First, we must find out if either its your keyboard that's busted or it has something to do with windows. If you can get hold of another keyboard, shut off the computer, switch keyboard, then power up the computer then see what happens. If it still does the same thing, try to do a system restore, click start>All Programs>Accessories folder>System Tools> then click system restore. Click next on the first system restore page> then choose a BOLD date that you're sure that the keyboard is still working fine. Click next, then click next again. Just just let go, the computer will automatically restart. At the end of the system restoration process a pop up will appear when you get to the desktop screen. Just click next. Test your keyboard. If it still does not work. Back your data then reinstall windows. You can also do PC restore if your computer has the capability to do PC Restore by restaring computer, on the dell logo screen(this screen appeaRS A FEW SECONDS AFTER TURNING ON THE COMPUTER)hold down CTRL key on KBoard while tapping F11. just follow the instructions given by the Symantec program.