If you can get the light to turn off an on, press CTRL + ALT + DEL and End Task the frozen program. Otherwise, follow the steps below.
Software related issue
A computer locking up or freezing is often is caused by software related issues. If you are encountering lockups when the computer is opening a particular program, make sure you have all the latest updates for that program. You can find the latest updates for your software through the software developer or publisher.
Too many programs open
Each program or Window you open on your computer takes some of the computersresources in order to keep it running. If you have too many programs open at one time, your computer may be low on resources, and it is causing your computer to freeze. Try only running one program at a time to make sure your freezing is not being caused by too much being open.
Driver related issue
Operating system related issue
Heat related issue
Serious issue with Windows
If you have tried all the above recommendations and the computer continues to frequently lock up, its possible that Windows may be seriously corrupt. Try running through the basic troubleshooting steps for your version of Windows on our basic troubleshooting page. If these additional steps do not resolve your issue, we suggest youbackup all information and erase and reinstall Windows.