Q: Mouse has been jumping and moving on its own

As far as the mouse is concerned, it could be a problem with interference.  Is it the new Magic mouse 2?   Have you another mouse in the room or introduced new electronics, phone hub, router etc.

If it's a wireless mouse then low battery power in addition to wireless interference can cause jumpy or sporadic behavior with the cursor.

FWIW, the screen and mouse problem could be hardware related. How old is your Mac?

One other possibility is the surface that your mouse is moving on. Glossy surfaces can cause erratic behavior from optical mice.

I forgot to mention it and no one else did but, it's not being caused by malware or a virus.

You can never tell, but your machine is not really old.   My machine is 2007 and going strong.   You haven't said how old the mouse is or if you have introduced new electronic items into the room.   Have you changed its location recently?

melissafromwollongong wrote:

 

I've been having trouble with my iMac I run OS X Yosemite 10.10.5 and

1. the screen keeps pixilating and
2. when i try to close a screen in has a delay and overlaps also
3. my mouse has been jumping and moving on its own
4. is there anyway to see if I've got Malware or Virus

1. see > About LCD display pixel anomalies for Apple products released in 2010 and later - Apple Support
   according to everymac.com, your iMac has:
   This model has a 21.5" glossy LED-backlit 16:9 widescreen TFT active matrix display with "IPS technology" and a native resolution of 1920x1080. Apple also reports a viewing angle of 178 degrees horizontal and 178 degrees vertical. The contrast ratio is 1000:1.
   1. it is really hard to paint a mental picture - take a screenshot of the entire display when you see the anomaly = Command + SHIFT > 3 = and post here
2. Get = Apple Menu > About this Mac and post the screenshot = Command + SHIFT > 4 then SPACEBAR to get a "camera" cursor
   
3. see others thoughts = Plus
   1. tell what has changed since this started = anything at all including the environment
4. yes, download and run > Malwarebytes | Free Anti-Malware Detection & Removal Software for Apple Macintosh ComputersIUNOTE < an app written by a fellow member here, thomas_r
   NOTE: There are no known viruses that affect OS X in the "wild" - NEVER install anti-virus software in OS X, it will only slow your Mac down (at the very least)

You should never remove anything from /Library/Frameworks

Duane wrote:

 

You should never remove anything from /Library/Frameworks

I tried explaining that in her other post. Perhaps she'll believe you.

"The frameworks you listed are part of a normal OSX install. don't touch them. "

wireless Mouse (and keyboard) batteries need changing every once in a while > Apple Wireless Keyboard, Mouse, and Trackpad: How to install batteries - Apple Support