I am a computer novice who purchased a HP Pavillion notebook HDX9010NR. It was an upgraded $3000 computer with a 20" screen to use with the 3 dimensional imaging program to use in home demonstrations. It was sparingly used. About 1 yr. after purchase, while doing an HP diagnostic check, it was recommended to due a bios update. This bios update basically fried my computer. The HP rep "allowed me" to return it for a no charge repair. It came back, it did not respond properly to wireless keyboard and mouse, an HP online diagnostic check diagnosed a couple of HP program upgrades, as well as the bios upgrade. It fried the computer again. This time the telephone teck copped to the fact that even though there is no warning on the program upgrade, the upgrade was not compatible with my computer. Thanks. I lost a semester of school, the $1,000 rental of my 3d program, and the clients who paid to see their work on screen. I have just opened the box and plugged in the computer after it's 3rd repair. The battery light will not come on and the computer itself will not switch on. I am taking it to Best Buy to have them fix it and then sue HP.