20 Most Recent Dell Vostro 2520 Laptop Computer- Intel Core i3-2328M 2.2GHz Questions & Answers

http://ftp.dell.com/Pages/Drivers/vostro-2520.html

whatapp according to my knowledge is for mobiles and for tablets it might not work with windows based os , it works with symbian and android

this looks like hard disk failure try replacing the hard drive or if it is a loose contact remove and refix hard drive

If you have an additional admin account then you can change it from yours. If not then... Google a program called Offline NT. Copies to a CD and you can boot from it. Follow instructions, but be careful wiping passwords. Could do damage to the registry.

Have you down graded? Try Windows Updates. If so you will have to find the old XP driver one by one at the Component Manufacturer's website. It's a bit of a pain. That begs the question, "Why Downgrade?"

You could try the below mentioned Link for the Download Link: http://allmyapps.com/apps/whatsappGood Luck!

have to reset the computer

you would have to reset the computer