power supply

I was at work yesterday, do not know how, my computer seems to have what problem, is suddenly closed, not what reaction, so I went there carefully read, feeling may be power supply where what happened, so I went to the professional maintenance staff came to help me see, they also checked the power supply, it turned out there is a problem, so now they are in the maintenance, not a long time, they have done this, I opened the computer and try, like it, I can use it, the power or supply very important, let me be very good to complete their work.