Gmail won't let me compose an email.

Question

Am trying to compose an email and Gmail will not engage with mouse clicks. Have tried everything and it just won't let me create.  Response to incoming emails is fine with no problems.

icantchooseone · Accepted Answer

try some basic troubleshooting things  :   
 
press F5 to refresh gmail  
 
if still no good :   log out of gmail. Clear your browser's cache and cookies  >> https://gmail-issues.blogspot.co.za/2017/08/clearing-cache.html
 
update your browser to the latest version. close and re launch your browser. log into gmail here    https://mail.google.com   
 
if still no good :   Try disabling any browser extensions and starting the browser again ( also try incognito / private browsing / safe mode / reset firefox )
 
Try starting GMail without any advanced features ( formerly named Labs ) you might have enabled (use https://mail.google.com/mail/?labs=0 to do that)
 
Temporarily disable your anti virus  ( and firewall )
 
Try another browser to see if the behaviour persists
 
Try another computer to see if the behaviour persists
 
Try another internet provider
 
If you use a router try bypass it and 'go direct to the wall' 
 
some people have even reported that SHUTTING DOWN   their pc ( NOT just restarting it ) or changing their themes fixes some issues , and also try changing your zoom levels :   hold down control and press + a few times to enlarge  hold down control and press - ( minus )   a few times to reduce hold down control and press zero to reset  ( on a Mac use Cmd instead of Ctrl )
 
  and some people have even reported that removing their signature fixes some issues 
 
  turning off/on  hardware acceleration in your browser may also help  >> http://www.tech-recipes.com/rx/53337/disable-hardware-acceleration-in-mozilla-firefox-chrome-and-internet-explorer/  
 
you may need to disable plain text:    
Click Compose.
Click More options .
Deselect "Plain text mode."
  also check here https://myaccount.google.com/permissions?utm_source=google-account&amp;utm_medium=web
 
if still no good run a full antivirus scan . and the following  tools can be used to try and clean a computer infected with adware/malware that may not be cleaned by the typical anti-virus program.  
 
LavaSoft Ad-Aware - http://www.lavasoftusa.com/
 
Spybot: Search & Destroy - http://safer-networking.org/en/index.html
 
MalwareBytes - http://www.malwarebytes.org/
 
SuperAntiSpyware -http://www.superantispyware.com/
final option  - backup your bookmarks and uninstall the browser and download a fresh copy