No signs of life after upgrading ram and HD

[jazz310]

I upgraded my intel solo mini with ram and a new hard drive. When I put it all together, but alas there was no reboot - no sound or video.
The ribbon did come out of the socket from what looks like the optical drive during reassembly, but I was able to put back in with some effort.

any suggestions?

 

[Heilage]

If you disconnected it, did you remember to reconnect the cable that goes from the power button to the logic board?

 

[voyagerd]

Try disconnecting everything and reconnecting it again.

 

[logandzwon]

As said above, reset everything. Power up with the case off till your sure it's working.