Windows 7 windows hangs

[kkacir]

sometimes windows 7 just hangs. i have no access to the mouse or keyboard. also, i noticed that if Task Manager is running, it appears to be hung also (not updating the display). I have to hold the power button to shutdown the system. any ideas as to what is causing this issue and how to fix?

Ken

 

[cybercore]

Possible causers:

- some software conflict such as antivirus and firewall
- corrupted system files (command prompt > sfc /scannow)
- corrupted ntfs (command prompt > chkdsk /f)
- faulty RAM (http://windows7forums.com/blue-scre...mportant-every-thread-starter-please-see.html)
(http://windows7forums.com/blue-screen-death-bsod/55603-sf-diagnostic-tool.html)