Hi
ive been trying to uninstall it cc cleaner.
from the control panel im getting the "you have no sufficient access to uninstall cc cleaner".
from the uninstall button in the cc cleaner folder im getting "NSIS error - error launching installer"
Which version of CCleaner are you trying to uninstall, and which Windows version are you using?
There is/was a known problem with the uninstall string for some users which would throw that NSIS error, it was reported for CCleaner v5.65 (and usually Win7).
Although this may seem an odd way of doing things try the following:
Install CCleaner version v5.66, for simplicity download the 'Slim' installer from here and double click it to install: https://www.piriform.com/ccleaner/builds
That will overwite v5.65.
You should now be able to uninstall v5.66 as normal.