This sounds as if you may be running in a guest account, or have UAC switched off.
Please open a Command Prompt window, and run the following commands - post the results.
REG QUERY HKU
REG QUERY HKCU
To run the commands easier, highlight the block of commands, and right-click on the highlight – select Copy. In the CP Window, click on the black/white icon at top left – select Paste. The commands will run but may not complete the last command, so hit the Enter Key once.
To copy the results... click on the Black/White icon in the top left, and select Edit... 'Select All', and hit the Enter key - then use Ctrl+V or r-click+Paste to paste it into your response.