What is computerrepairupdate.net
Computerrepairupdate.net pop-up comes when users try to browse normal pages. It requires users to install the "Flash Player Pro" to continue. Although users can just shut it and keep on browsing, the pop-up will come again and again until users get bored and install what it offers.
However you should not be fooled. This message is provided by the adware on your browser. It provides unwanted programs instead of real flash players. The files from it are detected to be extremely dangerous and destructive.
Obviously this adware try to earn pay-per-download revenue. Your browsers' setting can be modified without your permission, and such malicious pop-up comes as soon as you open your browser or a new tab. The modification was probably done by malicious sites you visited, or malware and trojans in your computer. Anyway, what you need to do is to remove the adware and clean up your browser in right ways.