Windows PC Desktop will not close or exit.

Have finaly got backup and connect problems ironed out (minor) however now when I try to exit desktop it locks up and I have to exit via task manager.
I have timed it and waited 34 minutes today.
Have cleaned out any traces after an uninstall ,then reinstalled and still no joy.
Will post another for the following but it also locks machine at 100% cpu and 90% memory on a six core,12gb memory machine when in use.
Any sugesttions?

Try to start Firefox in [[Safe mode|Safe mode]]. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If Firefox works fine in Safe Mode, then this is likely an add-on issue. Restart Firefox in normal mode, then type "About:addons" (without the quotes) in the address bar. Disable your extensions one by one, restarting Firefox between each one, until you find the trouble maker. Once you do, you can disable that add-on and report the issue to that add-on's developer.
A few other basic trouble shooting things you can try is this:
Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. [https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers].
Download and Install MalwareBytes Anti-Malware, run a full Scan. [http://www.malwarebytes.org/ http://www.malwarebytes.org/]. This helps check that there are no viruses on your computer causing issues. You can uninstall this program after you clean off any infections.

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From: Anubha Goel <[email protected]>
To: rubyrose1950 <[email protected]>
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