BSS

One of my clients purchased a GV system and over the last 3 years has hired me to update to it to his needs. Currently there is a GV1240 Card with 8 analog cams and we have a mixture of 10 IP cams. Randomly the GV software just closes, no error reports, nothing in the log. It just goes back to windows. The system will run fine for a few weeks and then it might crash 3 times in one week and then run for a month. I would appreciate any help