Windows is a fantastic operating system. Providing you've got a computer that meets the specifications that it needs to run and an antivirus suite, you're good to go really. Something that really annoys me is "Windows is so difficult to install." and this is coming from computer literate people - they last installed 2000/XP where it was a hunt for drivers. Windows 7 solves that problem, I don't think I've had to install a single driver on any of the machines I've formatted. It is superb, and speaks volumes for Microsoft.
Go back to Windows 2000, the little use I had with it, it was brilliant. A fantastic improvement over the lesser versions (particularly Windows ME). Then along came XP, another fantastic improvement. Yes, I did have a few problems with it, but these promptly solved with a few updates which is always inevitable as you cannot account for every computers hardware setup and components.
The next instalment from Microsoft was Windows Vista. I got Vista on my laptop, when SP1 was released and to be fair I loved it. I never had a single crash or issue with it, and I use my laptop fairly intensely throughout the day. The only "niggle" I had with Vista was how power hungry it was and how many background services were running.
Windows 7 as I have already mentioned is a fantastic operating system. It brings many fantastic features to the table - aero snap and the new task bar are fantastic additions in my opinion. The first thing that impressed me, however was the simplicity of installation. Pop in your Windows DVD, follow the prompts, enter some information, let the wizard finish and then at the end of it install an Anti Virus product, connect to the net and update your Anti Virus and windows - very, very simple in my eyes.
In my opinion, to the OP the issue is not Windows. It's the blob of protein between the chair and the keyboard.
As well as this...
Getting repeated NTLDR errors means you've got a dying hard drive, that's probably the root of your problems