Unexpected shutdowns

I was having a problem with a pc at my job continuing to shutdown unexpectedly back in December. After doing many things to the pc I finally discovered the problem. There were bulging, leaking capacitors on the motherboard near the processor. That was the first time that I had experienced that but here again I found this problem with one of my customers at GPCS. After doing the preliminary troubleshooting steps I found this again. The motherboard needs to be replaced but isn't really cost effective. The repair cost is around $200 for an older pc. I informed my customer but advised them that if it were mine I wouldn't put that much money at an older pc but would consider buying a new one now. That's what they did. I am not in the business of building computers from scratch. I can do it but think a complete system from a reputable manufacturer is the best way to go. I am now in the process of getting the data off their old hard drive and will be moving it to their new computer in the next day or so. They'll have all of their data and Internet shortcuts on their new computer system. The only drawback is that any programs they had will need to be reinstalled. Otherwise, they will be in much better shape than before. So if you have this problem take a peek at the capacitors closely on the motherboard. They could be the culprit.