1. The files beginning in K and Q are there in case you need to restore to the point your computer was at before installing that patch. If you remove them youwill not be able to revert back to that point. You can delete them but since you're not computer savvy, leave them there for a week or two after patching the machine and if you're not experiencing any problems, then remove them.
2. You can also delete the Dr Watson log. It is generated so a Microsoft technician can help diagnose a problem on your computer. I doubt you're about to call Microsoft if an application crashes and generates a Dr Watson.
3. When you see files in blue, it only means that they have been compressed to conserve space. Windows copresses files that aren't used very often when you run defrag. Hope this helps.
I am not computer savvy at all and have tried to find the answer to this question by myself. I hope no question is to small for this forum. I am trying to free up space on my computer. I have Windows XP. I usually delete temps files and log files that are not needed. I download the updates from microsoft and along with them come text files beginning with K or Q. I have lots of them. Can they be deleted? Also can I delete the Dr Watson log file? Everytime an error occurs it adds to this file. I am not having any computer problems at this time. Can someone also tell me why some files show up in blue print when a search is done. Does this mean they are needed files. The data files beginning with K and Q are also in blue. Thanks for the help.