I bought a Dell Studio 1737 with Vista 64 bit OS a few months back. About a month an a half ago it started to have issues on start up.  A blue screen would briefly appear indicating a memory dump then it would ask if we wanted to run windows repair or start normally.  If we tried starting normally, it would just repeat the process.  If we repair, it takes about ten minutes to run then we may or may not be able to start it up.  It is now happening every time we start up.   Repair doesn't seem to find anything wrong. Once it finally starts up it works fine.  Usually I have to restore to a previous point. Today it is not even getting past that. Is there anything that can be done short of doing a complete reinstallation?