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This appears to be malware infections on the computer.
First you need to remove these. To do this, download Malwarebytes (you can use the free version) from my link belowClick me to view
Download it on a working computer
Then copy the file over via USB stick to the problem laptop and install it.
Once it is installed, run a full scan and remove all the infections it finds.
Once done, restart the computer, then again reset IE and clear the cache
To do that, do the following in Internet Explorer
Click Tools (the gear wheel top right) than Internet Options
Click on the General Tab and Delete all Temporary Internet Files.
Than click the Advance Tab and click Reset
Then restart the computer and check if IE is now working.
Let me know the results please