with magic!!!
no, seriously, they mention the iso but is not anywhere to be found, you need to search for the torrent or someone sharing it on internet
ubcd linux version is not that useful on your case, ubcd for windows is better now
constant freezes on a laptop can come from a bad ram module, a error on the partition or the hard disk, overheating or a good hit the owner gave to the laptop and when it gets hot creates the situation
by any chance is a refurbished unit?
the hard disk, discover what brand is and then find the tool from the manufacturer to diagnose it, if it fails the diagnose, you have the reason, if it passes wipe the hard disk with dban and then create only one partition for windows, primary partition
the ram module, use memtest to see possible errors or if possible remove both modules and put another you know is working well
there is a temperature tool similar to cpuz in the same website that can show you those values, this could indicate that thermal paste is not working well(or never applied properly)or the heatsink/fan are not in good condition, probably dust
if all this steps fail and the laptop doesn't have warranty anymore start removing keyboard and have fun!!
or simply get another and avoid at all costs acer
about the tools to recover, ultrabootcd win has some of the tools i mentioned, the ultrabootcd linux has others including most of the tools to diagnose the hard disk and avoid the annoying creation of very small isos
another tool you can use is systemrescuecd
