I-Scan Error finder software allows you to search your whole PC for errors, then make a complete list of those for later analysis.
It searches through any .txt , .log , .xml file for certain keywords such as "error","failure","critical", when a match is found it adds that file to the list. Once the list is complete you can save it for later analysis.You are also able to customise the file typs it uses to search for, giving more flexibility. You can specify which drive to search on also.
Once the list has been completed you can look at each entry and review the errors within each of the files.