I've leaned on On Call many times for help with my technology. The technicians are always professional and very competent. One time, a water bottle broke and spilled in my computer bag. I rushed my computer to On Call and the techs were able to diagnose what damaged the water had caused (luckily just fried the battery), ordered the part, had the part over-nighted, and I was reunited with my dry working computer by the end of the week. They also keep my data backed up, so I was confident that if my computer was not salvageable, I at least would not lose my important files!!