My laptop model no. vostro 1510 not support external usb keyboard how to solve this problem

Try re-seating the the LCD video cable connection under the keyboard, it may have come loose.
run the LCD BIST Test by pressing D + the Power button, you should get 4 solid color screens. If no go, then the LCD has failed

Try plugging in a USB keyboard and see if it does the same thing.If not then you need to have the keyboard replaced.

It is very possible that a fluid (water, moisture, coffee, anything) might have poured into the keyboard and now affecting it. Unfortunately, these keyboards are rarely repaired, but instead replaced. Go to your dealers shop to discuss replacement of your Dell Vostro Keyboard.

HI,
If you Are writing numbers instead of letters when you press the keyboard of your laptop and you must hold down the Function key (Fn) to write normally.

This is due to the fact that the digital lock is activated. To solve this, simply press the Fn+Numlk or depending of the model, press the button or Fn + Shift +Numlk

Hope This Helps
THANK YOU

uninstall the driver of dell vostro 1510 webcam remove the connection

now connect the webcam it will detect the new hardware found goes through this and give the path of the driver and check it .....

if after connect the webcam its not detect ....its may be your webcam or usb port problem

Quickly and repeatedly press each key on the keyboard.
Due to the impact, one of them may have become "stuck" in the "down" position, and thus is interrupting the start-up of your computer.

I found this on another site, and it worked on my Vostro 1510:

Try pressing shift + numlock (Scrolllock in blue) to toggle the Fn feature.

Normal numlock comes on, so press it again by itself to turn that off.

My curser keeps jumping around when I am trying to type a letter, or email. I have a feeling it is my keyboard, so I have a new keyboard for my Vostro 1520, I took all the screws out in the back, but cannot figure out how to open up my laptop, so I can install my new keyboard. Any help would be appreciated! Thank you so much! Alan Tak

Hi here is a link to Dell Vostro Drivers...

http://www.getpcmemory.com/drivers/download-dell-vostro-1510-notebook-windows-xp-drivers/

Hope this helps

Start the computer and go into Safe Mode by pressing the F8 key repeatedly when you see the Dell splash screen. Select Safe Mode at the top of the list. When SM is fully loaded, you will see a windows telling you that you are in SM. There will be two buttons at the bottom of the window. Click the right button to do a system restore. Choose a date just before the mishap with the external keypad. It will restore the computer to how it was at that time and restart Windows.

Good luck, and please let me know how it works out.

~ Spoem