My computer would not boot up . I could not restart it could not do anything. It just made a beeping sound. I phoned pc troubleshooting to book an appointment for a home visit and he was willing to come within 2 days to take a look even though he was travelling all the way from Oshawa to Toronto in the middle of a winter snowstorm. He opened up the tower took off the backing took out the motherboard shook it out put it back in and voila problem was fixed. It took all of 5 minutes. He knew exactly what to look for and what to do. He only charged me for the travel time not his labour. He was friendly polite even told me how to prevent future problems. Excellent service professional and courteous.