i have a problem when i play need for speed my computer crached all the time if he is ok my window is turned
i have windows xp

Look in your Event viewer: rt. click My Computer then click Manage then Event Viewer.
Or: Administrative Tools/Event Viewer or Start/Run/ eventvwr
Open the system as well as the application tabs & look for X errors. Click error line for details.
Post back the source & event id & Description especially of errors that seem to coincide with this issue.
Also check the Information lines that might coincide with this issue.

How to view and manage event logs in Event Viewer in Windows XP

Also view your Error Log via:
[1] Start Menu
[2] Help and Support
[3] Pick a Task
[4] Tools
[5] Advanced System Information
[6] View the Error Log

Fout 20/02/2006 16:49:02 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 20/02/2006 16:49:02 Service Control Manager Geen 7009 n.v.t. CHRIS01
Fout 20/02/2006 16:48:32 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 20/02/2006 16:48:32 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 20/02/2006 16:48:32 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 19/02/2006 9:17:20 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 19/02/2006 9:17:15 Service Control Manager Geen 7009 n.v.t. CHRIS01
Fout 19/02/2006 9:16:57 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 19/02/2006 9:16:57 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 19/02/2006 9:16:57 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 18/02/2006 8:35:29 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 18/02/2006 8:35:29 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 18/02/2006 8:35:29 Service Control Manager Geen 7000 n.v.t. CHRIS01

Fout 17/02/2006 8:44:38 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 17/02/2006 8:44:38 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 17/02/2006 8:44:38 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 16/02/2006 16:16:06 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 16/02/2006 16:16:06 Service Control Manager Geen 7031 n.v.t. CHRIS01
Fout 16/02/2006 9:05:30 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 16/02/2006 9:05:30 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 16/02/2006 9:05:30 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 16/02/2006 8:48:27 Print Geen 54 SYSTEM CHRIS01

Fout 16/02/2006 8:48:08 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 16/02/2006 8:48:08 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 16/02/2006 8:48:08 Service Control Manager Geen 7000 n.v.t. CHRIS0
Fout 15/02/2006 9:22:18 Service Control Manager Geen 7026 n.v.t. CHRIS01
Fout 15/02/2006 9:22:18 Service Control Manager Geen 7000 n.v.t. CHRIS01
Fout 15/02/2006 9:22:18 Service Control Manager Geen 7000Fout 14/02/2006 16:54:43 Print Geen 54 SYSTEM CHRIS01
n.v.t. CHRIS01
my system has a lot of erros
i need an hour to post it al

You can click on those lines to get details. They are all services which have failed to start for some reason. Perhaps benign. In the details look for what service they refer to.

One way to test the game problem is to force a crash and note the time. Then back in Windows look for errors at that time.

Also: what do you mean by "if he is ok my window is turned "?