Can you describe symptoms a little more precisely please? System crashes rarely "wipe out" software - though they may give rise to exception errors and system crashes. An idea of your operating system would also be helpful. If the system is new, I would recommend a return to the supplier to sort out - if you have built yourself, then this course may not be open to you and on what you have said it could be a number of things - at the top of my list would be either overheating or a hard disk problem of some sort. But without further detail, this is no more than a guess.