I've just bought a laptopith windows vista, I increased the font as it was too small. I clicked on the DPI scaling and made it to custom 192, but now its too big and I cant get it back again. The window is too bg and theok button is off the page and i can't click on it. I've tried systeyms restore but that didn't help either. Can anybody help me please.

Can you get into Safe Mode?

After making your changes use the keys alt a on the keyboard to apply the changes. Hope this helps you.

Thank you so much, i've done it never use the keyboard controls, thanks again