Well it depends on what’s wrong with the computer. If the operating system is no longer functioning, and you’re talking about a startup disc, then yes, it can help you get your computer up and running again. However, if there is a problem with your motherboard, no software will ever fix a hardware problem. Windows startup discs can allow you to use networking and internet functions, as well as access some parts of your hard drive, but if the technician said that there is a problem with your motherboard, I’d expect that using a startup disc would be rather useless.