I have Windows 10 media on a flash drive,and I was going to load it onto my other laptop that had no OS on it. I got to a screen that had said "Setup is Starting". Then, a box popped up saying,"...

I'll be trying the defrag again, hopefully it works this time

The defrag didn't work,but the CCleaner did help a little,thanks.

No I meant I don't know how to factory reset my Dell Latitude D810. It's my second laptop but it's old and slow, like really slow.

So... Macrium didn't work... and my flash drive isn't big enough to put Windows 10 on it, and I don't have any blank DVDs, so I'm screwed until I can get those. I'm typing this from a (really) slow...

Thanks for the help everyone. I'm trying Macrium right now.

Ok, so a while back when the Windows 10 Upgrade had popped up on my computer, I upgraded with no problem at all. I wanted to do a factory restore in order to clean up my laptop completely, however...