shutting down mining software

[realex]

Hello.

I do have a couple of questions if anyone can please help.

1. If I'm running one of the lightcoin miners on a windows pc using a pool, will I lose that work if I shut off the pc for a few hours? Will it resume where it left off once it's back up and running? Or it's like starting all over everyday If I do shut it off daily?

2. WIll the pci-express 3.0 gpus work fine with an older pci-express slots such as 1.0 or 2.0?

Thank you in advance.