mine is similer to others i had windows vitsa home premium i up graded to windows 8 for £25.00 after a about 3 days my pc crashes i get a messege comes up saying there was a problem with your pc and it says some think about my screen iv had to recover my pc 3 times since up grading any one got any ider or having same problem plz
You got a bugcheck and that's why you see that sad face, telling you that something is wrong. A bugcheck (BSOD) is a mechanism to protect your PC from damage.
To see the cause I have to take a look at the dumps with the Debugging Tools for Windows.
Please start the Windows Explorer and go to the folder C:\Windows\Minidump. Next, copy the dmp files to your desktop, zip all dmp into 1 zip file and upload the zip file to your public Skydrive  folder and post a link here.
If you can't see dmp files, make sure your Windows is configured correctly  to generate dumps.
If you want to analyze them your own, check those videos  and read this KB article 
 http://channel9.msdn.com/Shows/Defrag-Tools/Defrag-Tools-16-WinDbg-Driver-Verifier, http://channel9.msdn.com/Shows/Defrag-Tools/Defrag-Tools-17-WinDbg-Driver-Verifier-Part-2, http://channel9.msdn.com/Shows/Defrag-Tools/Defrag-Tools-18-WinDbg-Driver-Verifier-Part-3
"A programmer is just a tool which converts caffeine into code"
- Proposed as answer by Andre.ZieglerMicrosoft community contributor, Editor Monday, January 21, 2013 6:11 AM
You may record mini dump and try to analyze it with Windbg. Refer to:
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- Edited by Arthur XieMicrosoft contingent staff, Moderator Monday, January 21, 2013 6:02 AM