registration key problems

the reg key will not hold every time i reboot it kicks out please help

Hi mugwye!

Which operating system do you use?
Are you logged in as administrator?

yours
onlysomeone

Avast may be currupt. Use avast removal tool. Run it reboot computer twice, and download Avast Free and try your key again

Go to the SSL page version and register from there: https://secure.avast.com/scripts/register.php?lang=ENG. The Registration key is valid for 14 months.
See the tutorial: http://www.avast.com/files/tutorials/insert_key.htm
Please take a look here: http://www.avast.com/eng/faq-invalid-license-number.html

What is the error message?
Is your system date/time correct?
Do you use copy & paste method?
Are you sure you do not include the ‘last blank space’ in the paragraph while copying & pasting?
Which avast version are you trying to register (Home or Professional)?