Help: Computer cannot start

All high hands:

I returned home from long weekend vacation and found out my computer could not start (launch the windows), I pushed the power button and the power was on with beeping, it just did not launch the Windows.

My computer is a desk top e-machine T2200 purchased in 2002. I could not find the starter floppy disk if it did come with the package.

I would appreciate it if any high hands can offer any solutions to this problem. Thanks.