Updating bios on hp a520n
If your Windows Vista displays boot errors and you’re not able to boot into Vista, you can download Easy Recovery Essentials and use the Automated Repair feature to automatically find and fix boot errors. Notes before you start: You can now start the disk creation process again.
HP limits the creation of recovery disks only once per computer model.
HP users can create a recovery disk using their built-in Recovery Creation software or the hidden recovery partition, depending on what Windows version you’re running.
Consider using an alternative recovery disk to fix boot errors or to access and backup your files – details here.
The recovery media can be saved on CDs, DVDs or USBs: This method requires only CDs! If your Windows XP displays boot errors, you can use Easy Recovery Essentials’ Automated Repair feature to automatically find and fix boot errors. Windows Vista users of any HP computer can create a recovery disk by following these instructions.
All these components, except the keyboard, can be accessed through on the bottom of the computer. Remove screws from the 1st hard drive and memory covers. Under the memory cover you will find the wireless card and RTC battery.
In order to remove the hard drive, lift up the right side of the drive assembly (move 1) and then pull it to the right (move2).