Reinstalling Windows 7

Use this until you can get the superior Clean Reinstall: Clean up factory bloatware

Ok will do...thanks Greg

Can someone tell me what is a COA sticker?

It's on the back of a PC, the bottom of a laptop:

Certificate of Authenticity.

I took the chance and placed the new DVD in the drive and installed it. I cannot remember all that happened, but at a timeI was asked if I wantet to 'format' C: and erase the partition on it, and I said yes thanks, and everything went just fine.
But thanks for all your comments!
Best regards
Niels

No need to guess. Better to be fully in command of your reinstall so you get it perfect, then after setup can save a backup image to use in place of future reinstalls.

To get it perfect follow these steps: Reinstalling Windows 7

I should have made a disk right after the installation
Shouldn't I?

Which disk?

I have read many post about re-installing Windows 7 on a new hard drive with the Recovery media supplied by the manufacturer, in my case Acer. I made set of recovery discs immediately after starting my Aspire One AOD257 Netbook for the first time. I even shelled out $20.00 for an Official Acer Set of media.
What I do not understand is why I cannot makethis work. First you must know I replaced the Acer hard drive (250GB) with an OCZ SSD (120GB). I have an external USB DVD which I can boot from, this option is in my BIOS. I inserted disk one, and followed the boucing ball. After the 3rd disk, I removed it as instructed, reboot the Acer netbook going into the BIOS first and setting the boot order back to SSD 1st, but I get an error, no operating system.
I'd prefer a default factory reinstallation, with drivers and apps, but if all else fails, I have a Universal Windows 7 32-bit Installation disk, and the activation keycode on the netbook. Before I give up on the factory re-installation to a new SSD, maybe I am doing something wrong. Do I need to create multiple partitions first? The Acer HDD had 3 partitions: 13GB Recovery partition, 100MB System Partition and 220GB Acer C: main Windows partition. All are healthy.
I have an Acer desktop with 6 SATA ports. I was wondering if I could do something using the desktop to facilitate getting my Windows 7 installation over to the SSD. I am thinking about booting from a CD with something other than Windows, and cloning. Would this create the 3 partitions of the SSD. Isn't this what a clone is, and exact copy of the source to the target? I have read that the newer cloning software can deal with the different size issue. Can anyone better explain this to me. I'd also like to know why the media I purchase from Acer won't install on a new disk drive?