Hi. i was purchase a hp laptop just three days before. my laptop work fine but only bluetooth not working, so i update bios. i download software from hp website.after updating bios my dedicated graphic card not working. internal graphic card work fine. all thing was work fine, but when i insta graphic card driver and restart my lappi, it show a blue screen and give memory dumping error and my lappi was restart. no welcome screen was come. please solve my problem. thanks in advance.