My PC was working nicely. A few days ago, it suddenly closed; CPU was off, monitor etc. was off. It hasn’t been working since then. I also replaced its micro lithium cell CR2032 with a new one. But the problem is same. It has suddenly turned off many times before then I repaired it. But I can not do it at present. Please help ASAP so that I can complete my project in time. Thanks a lot.