Hi there,
My son would know about such things but he's away, so can't really help you except to suggest trying the troubleshooting features from the manufacturer. I've never heard the term soft cell used except in regard to a carrying case for a laptop, so I'm not much use. Hopefully someone else will be able to give some more ideas about your problem. If computer was switching off after having been on for a little while, I'd suggest it's overheating, but I gather it's not even getting going at all really. There was also some virus that was capable of shutting the computer down.

Try the troubleshoot. Here's one for windows...
http://search.microsoft.com/results....-US&FORM=QBME1

good luck. I'm sure someone else will have some suggestions for you and I hope you can fix the problem soon.