Windows 7 In-Place Install Repair: Multiple Problems

I had previously attempted to do this myself, going off of the guide here on this site, but it was one issue after another. Trying again, I've decided to ask for help.

Currently, I am using a Windows 7 Home Premium 64-bit operating system on my laptop, which needs the fix. Meanwhile, I'm trying to put together the USB to do the in-place install/repair from another computer, running Windows 7 Ultimate 64-bit. Last time, I decided to try and do that all on my laptop, but this time, I've decided to try making it on the healthy computer.

Previously, my issues were that the Windows 7 USB/DVD Download Tool wouldn't recognize the iso I had downloaded from the link provided by the guide here. After I used Image Burn to change it to an "ISO9660+Joliet+UDF", the USB/DVD tool would recognize the iso and start making that USB for me. However, it would always fail at the very end of the process - unfortunately, it's been a month since then and several tests/finals later, and I cannot remember the specific error message that I got.

Currently, however, my issue is that the USB/DVD Download Tool isn't even launching on my healthy computer, the Windows 7 Ultimate. Worst part, is that it did before. I know this is a lot, but I'm at a loss here.

Try instead a fresh ISO which you confirm has downloaded completely, but this time use UltraISO Software To Create Bootable USB Flash Drive which always works for me when the Windows tool can be fussy.

If you'll follow these steps for a Clean Reinstall - Factory OEM Windows 7 you will get and keep a perfect install for as long as you do. They are based on countless installs we have helped with here since Win7 beta.

Well, this reply took longer than I would have liked, but after doing as you've said and a disk check later to be safe, things are a lot better. I'm still shocked the other programs I grabbed just couldn't put that iso in the USB, but I definitely appreciate it a ton.