Hello MDL, Sorry at first i post that thread in wrong place, searched here compatible place but did not find. I need your recommendations about that: There are about 100 PC's, including a all in one PC's, in my job. I have 1TB external HDD. When some of them will damages system and will necessary to re-install a windows it is hard to install always a clean install to all of them and fix it. So is there a easy and good ways to install or make backups? i thought if one of them when will damages i will install a clean windows after i will save its image into my external HDD so to others after when i will need i will make back ups from that HDD. is something like that possible? Or give me more easy way to manage that please. because it is hard to serve all of that pc's only one man. sorry my bad english. and thanks in advanced.