My computer had so many things that I downloaded. And then I thought that I should erase some of them. I opened the local disk c and I erased some programs some of them said you can't ease this program and I left like that. And then I turned off the computer when I want restart my computer it worked I wrote windows xp like that and then the computer stopped working I mean the mechanic kept working but the screen didn't show me the monitor is good it works really good.

Hello xferyusuf

You can not "just" delete installed software. That causes huge problems, as the computer keeps internal links to the software in it's memory, and start searching for it. You have to delete software via start , configuration , software , delete selected software.

Restart your computer, and press 'F8' for your Windows to start in SAFE MODE operation.
From there correct step by step the problems your deleting caused.

Success

:)

Do a repair installation at this point

Repair Installation
A Repair Install will replace the system files with the files on the XP CD used for the Repair Install. It will leave your applications and settings intact, but Windows updates will need to be reapplied.


http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/tips/doug92.mspx

Post back

You could boot into safe mode and try doing a system restore,, and maybe you could restore any missing drivers causing the freeze up.

Hit f8 repeditly at the windows screen, then it should go to a selection screen