which monitor controller can I use for this laptop

@carrotsy that will depend on your display panel, not your computer. Disassemble your dispaly to the panel and take a look at the label on it. Most common panel for your model is a B156XW04 (there are different version recognized by the V.X number on that label. With that number do a search on either Alibaba.com or ebay.com for a "universal LCD controller board". You should find something like this. Again, always double check your LCD panel. To connect the kit is actually pretty easy. Check this guide for a bit of an idea what you are getting into.