Says Malware infections. If you can't find them then you need to take to a computer shop to clean them out.

Westend : OP needs help not a repair. ----------- Hi, Firefox is a Multi-Process Browser meaning it takes advantage of all cores of your computer chip and that it has all those things running it is doing what it is suppose to be doing. Default is set at 4 and so 5 things should be running, Firefox, websites tabs, Extensions, Sandbox + . Firefox is also a Multi-Thread Browser and takes advantage of your CPU chip that way also. If in Windows Task Manager these things are using excessive amount of ram and or CPU usage or it is creating heat. It is possible to turn them down and to disable them but only needed if not doing what it is suppose to do. '''''To be Checked and turned off unless needed for accessibility : ''''' Please : go to the Firefox 3 Bar Menu --> Options --> Privacy & Security panel and under Permissions check (put a tick in the box) the setting to Prevent Accessibility Services from accessing your browser. '''''Multi-Processor Support : ''''' Go to the 3 Bar Menu then Options --> General --> Performance and untick everything. change the recommended size lower then see how it runs. Note: 1 = No Multiprocessor = slow again. Try 2 Restart Firefox after making these changes please. Note : Hardware Acceleration is for Video Card, Monitor to see if remain off or to turn back on. Only Disable as last resort. '''''Multi-processor Can completely disable it this way in about:config :''''' dom.ipc.processCount set to 1 browser.tabs.remote.autostart = false browser.tabs.remote.autostart.2 = false *http://kb.mozillazine.org/About:config Only move to esr if low ram and old system. '''''Firefox Extended Release Version :''''' Firefox ESR does not come with the latest features but it has the latest security and stability fixes. *https://support.mozilla.org/en-US/kb/switch-to-firefox-extended-support-release-esr If do please : *https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles *https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer Please let us know if this solved your issue or if need further assistance.