Windows 10 issues after installing System Mechanic

I rv wrote:
I installed Iolo System Mechanic one week ago. Whatever changes it made to my system, I can no longer access Windows Desktop so cannot access any tools or apps. to uninstall it. Help! Thanks in advance for any help.

You say you can "no longer access Windows Desktop" and gave no more info. Anyway, here is a link to seven ways to uninstall System Mechanic on Win 7,8,10. Caution... I do not recommend you download any software offered at that link! I can't vouch for it.