Help me my pc laptop when i turn it on it just brings a messege "operating system not found".And trying to reload windows,it shows me another messege saying "hard disk not found", but it is there.trying a new hard disk with an operating already installed still to no avail.

You can download the audio and device drivers from the Compaq/HP WEB support/download page. Make sure you select your model laptop and the Windows drivers you require and install them. Click on this link to download the drivers: -
www.compaq.com/country/cpq_support.html

I would consider replacing mccafe antivirus because really slows the system down. Go to www.download.com Type: malwarebytes anti-malware and ccleaner, run malwarebytes first and do a full scan, followed by ccleaner, and finally defrag the hard drive. This should help speed up your system.

The laptop cannot find the Operating system which is installed on your hard disk drive. Go into the BIOS (setup menu) and see if the hard disk drive is present. If it is then your might need to reload the OS ( operating system software,i.e. Winodws Vista, Windows 7 ). If the BIOS does not detect your hard drive then either your hard drive is defective or the motherboard has a problem.

Hi, if you have formatted your hard drive then in effect you have wiped all information including the operating system from it, you will have to reinstall windows I`m afraid

John

This usually means 1 of a few things..
1. Your Harddrive is bad
2. You got a boot sector virus, and your boot ini file is so badly infected, your computer can't find the boot file and you need to format your c:\ or d:\ drive....if you can get to your CMD window (command) but the way you bring it up is from CMD in start/run/CMD but since you can't even boot to your desktop...then you can choose a few options..

IF you have your your Windows Xp, or Windows Vista or Window 7 (depending on how you purchased your system, I'm thinking XP...since with Vista and Windows 7 you can reload to factory settings)

If you do have the disk....then you WILL have to reload your Operating System ....IF your harddrive isn't bad (have bad sectors or clusters) or is just "old" or was bumped severely and there's a dent on your harddrive preventing your boot ini file from being found...

There are so many things that could be wrong with it....Send me more infomation....
It's definitely NOT your motherboard...it's a harddrive issue...whether from a virus (which there are many out there that could infect or even rename your boot file....or your harddrive is BAD..
Either way...let me know and I can help you further!!!

try formating it with linux and remove it and then install windows

this eroor is cannot find ur windows u install windows again

please try with F8 Function key

start your computer in safe mode
if it start then go to programs > accesories >systemtool >system restore
you get two choice
1.I want to store to earlier time
just select the date form left side square,mostly 2/3 days before date which ever is in bold
then restore to that snapshot ,start the computer

try to reload the operating system

it is saying no kernel is found in the boot path,, this either means the boot path is damaged or the file is missing,,, place the restore disk in and recover your operating system,, or you can put an operating system disk in and try and repair the operating system