While surfing, everytime a new window appears, either created or pop-up, my systems freezes. I then have to ctrl+alt+delete and start again.

Try what it says in point 14 of this post (the other points are worth doing too for other reasons) (the first link is SMUOD’s nice-looking HMTL version with hyperlinks, the second is the forum post with additional comments and replies) http://www.burzurq.com/forum/trevtweak.html http://www.computing.net/windowsme/wwwboard/forum/24159.html If point 14 doesn't solve the problem try repairing internet explorer Control panel, Add/Remove programs, MS Internet Explorer 6, click add/remove, select Repair Internet Explorer

did you test the ram out if its defective and giving errors? download this http://www.memtest86.com/ the 3.0 pro and put it on a floppy run it from my computer a: drive and test it for 15 minites see how it does.