I recently bought a western digital hard caviar harddisk with a capacity of 100 gb and 7200rpm. I wanted to put it in the HP vectra p3 system that I have. I removed the 5 gb hard disk in there and plugged in the new hard disk in its place. When I boot up the computer the hard disk is not recognized at all. WHile booting up..I get two beeps and the following error "0521-AE:IDE device#1 error". I used the western digital lifeguard toola nd it says "no western digital drives found". I removed the hard disk and plugged it back in with no success. Please help as I spent a lot of money purchasing this hard drive and now it wont even work. Thanks, Ram.

You might have some BIOS issues with a large HD like 100G

bios needs upgraded and beware western digitals are very touchy the only work well with ofther western digitals on the same cable your rolling the dice if it another bran on the same cable cable select, with its jumper on that positon works best it appears.

How do I solve them? Ram

whats the exact model number on the motherboard HP put a lot of intel motherboards in there computers, in the past and there hard to find for a bios flash and even if you find that intel board # and bios make on the web, it still may not support a 100 gig hardrive so you should #1, turn the hardrive back in and get a refund and get a 30 gig to be safe, #2 buy a more modern motherboard that supports that larger hardrive will out flashing it. but then you have to reinstall windows on the other harddrive unless you make it a slave and then you have to buy copy of xp windows and freash install it on the new 100 gig anyway so its going to cost you so $$$$..

How to identify the BIOS version on your computer: Right click My Computer Choose Properties Choose Device Manager Click the + beside System devices Highlight System board Click Remove Click OK to confirm removal Close Device Manager Click Start > Shutdown Select Restart When Windows reboots the device will be re detected Click Start > Run Type Regedit in the box Click OK Click the + beside each of the following; HKEY_LOCAL_MACHINE ENUM ROOT PNP0C01 Highlight 0000 Read the version from the right hand pane (BiosVersion key) LOOK AT MESSAGE NEXT IN THE SEQUENCE AND YOU SEE THE ANSWERS ON PROGRAMMING / FLASHING BIOS>

Thanks everyone. I was able to install it on a different system. It turns out that the BIOS of HP vectra would support only 65gb max. So that was out of the question. Ram