Dedicated Server Needs Fixed, Won't Boot

Hi there, I urgently need a network/linux technician to solve a problem at boot time. The dedicated server will not boot currently, I only have access to the rescue boot at the moment and this is the only way that I can control the system as it stands, we're a small hosting company at the moment, and we have clients waiting on their servers, so this needs to be done ASAP. The problem is not outputting any logs that we can see, we also had another technician who could not solve the problem, so we need somebody who is good, if you fix the server, you will be paid, otherwise, no payment I'm afraid. As I said before this is incredibly urgent and must be resolved today, as we cannot contact our datacentre at the moment because they are not open on weekends. I have a feeling that the error is due to logical volumes not being set up correctly but our other technician, but I am not entirely sure. We only have access via SSH, and swapping between rescue mode and normal hard disk boot via an online manager.