Will they be cleared from the laptop memory if the power went?

Cheers!

Went where? Has someone been a naughty boy?

want to play a prank on someone…

no

FWLIK, no, they shouldn't be. You need to clear these with something like MS Disc Cleanup.

You need to clear these with something like MS Disc Cleanup.

or just delete 'em from the 'temporary internet files' directory, or you do it from the tools menu option on your browser.

Sounds a right wheeze.

if you want to avoid casual inspection then use tools.

If you want a more thorough solutionthen a web washer is what you need although usign one of those is, in itself, rather an admission of guilt imo.

Ccleaner at CCleaner.com by Piriform (not from ccleaner.net!)
Free and also gets rid of index.dat files. As well as other stuff. 😀

Temporary internet files are very good at slowing down your pc… get rid frequently.. Thats why they are called temporary..

use the privacy mode when using your gf's computer

Temporary internet files are very good at slowing down your pc.

oddly enough the reason they have them is to speed up your browsing, by not downloading images etc on sites you return to.