Ms Dos Not working????

me window Xp use karta hoon. Ms Dos work nahi kar raha hai. Dos window open karte hi pahle se open all window(programmes) close ho jaate hain or dos bhi open nahi hota... and koi dos programee ya game bhi open karo tb bhi yahi problam aati hai.... help...

tel me have you installed any antivirus in your system ? if yes then how many antivirues installe din your system

you must re-install your windows......

Avira Antivirus.. use karta hoon...
without Window Re-install k koi or way nahi hai kya ? is problam ko slove karne ka???

Re installation is the only solution , but you can try following method

goto start
program
then system tools
then System restore

jis din system kharab huwa tha us say pehlay ki date select kar kay , next next kar do