PC won't boot

[alizeb]

Hello everyone,
Left my PC on last night and today I got a black screen with a flashing underscore. I can access motherboard access internet thgouh it using splashtop, hard drive are fine as I can browse and access pictures directly from motherboard. So basically Window won't start. Tried to boot from CD, it will not work. Does nyone knows how to access hard drive through Express Gate? or any advice? System is vista.
Thank you

 

[aford10]

Make sure the cables are secure.

Try resetting the BIOS.

Make sure the hard drive is the first boot device.