As u have ask, to find your recent installed programs go to PROGRAM FILES folder at C:\ the Arrange up your icons BY MODIFIED and you will find the recent file at the first.
About your problem I can give u another suggestion that the blue screen error may be caused by huge start up programs. To see it go Start -> Run -> type msconfig -> start up. If there exists a large number of programs, remove them without the antivirus and sound manager!
Then restart your pc.
You should clean your pc's junk files at temp folder. [Start -> Run -> type temp, then you will find some files, delete them without any tension bcoz there does not exists any documents of yours THEN Start -> Run -> type %temp% and do same process].
I think after doing these tasks your pc will be ok!