HELP!!! When I restart my computer my desktop background is always black

[WithHope]

When I restart my computer my desktop background is always black I can change it but when I turn it off and log into my account it's black again. I have 2 accounts. Plus, I've just recently started receiving messages of software configuring and being in need of genuine windows. I also have a problem with memory on my computer but I think I solved that problem with MemoryCleaner.
How do I fix my background problem???
and other problems

[killerb255]

First off...lay off the large font!! 

Second...post your computer specs.

Third...if you're getting messages saying that your Windows is not genuine, that means one of two things:
1) The Windows Genuine Advantage module on your computer is messed up.
2) You're running a pirated version of Windows. 

If #2, then we can't help you.  Period.
If #1, then you need to contact Microsoft.

Basically, if Microsoft thinks you're running pirated software, then it will change your background to back.  Every.  Single.  Time.  It's not a bug.  It's supposed to happen.

[Broni]

Same computer as here: http://www.computerhope.com/forum/index.php/topic,62381.msg401174.html#msg401174, and here: http://www.computerhope.com/forum/index.php/topic,73724.msg481234.html#msg481234 ?