Cant change background on computer?

Info on this type of infection from bleepingcomputer.com:

This is a new rogue anti-spyware program. Like its predecessors, this program is installed and advertised through the use of Trojans that display fake security alerts on your computer. These security alerts state that your computer is infected and that you should click on them in order to download software that will protect you. Once you click on these alerts, the Trojan will automatically download and install the program on your computer.

This program has only one purpose and that is to trick you into thinking you are infected so that you purchase it. Please ignore any warnings that this program may display and instead use the free program below to remove this program and any associated malware.

You MAY be able to download, install and run Malwarebytes anti-malware program from www.malwarebytes.org, or you may need to use a clean computer to download the program from www.malwarebytes.org and copy it to a flash drive or CD. Then transfer the install file to the infected computer and install and run.

Occasionally you will not be able to run this program without being in SAFE MODE. To get there, reboot your computer and tap the F8 key, repeatedly until a menu comes up. You want to choose SAFE MODE WITH NETWORKING.

If you still are unable to run this program, you may need to RENAME the downloaded file to something like HELP.EXE before you transfer it to the infected computer or you may be able to RUN the program directly from the flash drive.

HTH!

Go to your system restore and it should git you back on track hopefully. I'm being serious it should work just you have to go back a couple days or befor when your computer went nuts.

My little brother did this to my old laptop. Way to go. Shouldn't have been on those sites.

Try downloading Avast or AVG and see if they can find anything.

I had kind of the same problem a while back. You may have to change a regkey or something (: I would advise you to google it.

Try Malwarebytes or SuperAntiSpyware.

They blow the socks of the ones you have used and are both free.

did you try saving the pic on your desktop opening it and then right clicking and going to set as background that shud do it....mabey♥

first of all you have to go to my account then you have to change background then there

you cant or u don't know how ? Right click on blank screen go to properties .