Motherboard or Computer

Looks like your computer can't find an Operating System in your hard disk. May be the hard disk is dead. You should check hard disk connection cables, and if they're working, we'd have to assume that the hard disk should be replaced.

is the computer see ing it if not ,unplug run computer then turn off re plug in and computer should see it with its plug and play system

Not much info to go on but..
1. Try swapping the connector between SATA port 1 & 2.
2. On boot enter BIOS, if it is recognized as a device in your BIOS then it is simply a formatting/windows issue.
3. Does it show up in windows Device Manager & is the driver installer/working properly? If not, uninstall driver and let it install again automatcally.
4. in control panel under Adminstrative tools open Computer Management, in left-side menu select Storage->Disk Management, it may show up as unallocated drive / disk space, quick format it with NTFS file system.

If you are running anything from windows XP upwards inc Vista
then you must re-install the operating system when you change the motherboard.

From your description that is the problem you are encountering.

You could place your windows disc in the cd rive and tell the computer to boot from that and try a "repair install"

If successful you will loose no date but will be asked to re-register with microsoft.

If your windows disk is original and not meant for an OEM computer that will not be a problem

You could have a faulty disk controller. Try inserting a different working hard disk into the HP and see if it can detect it in the BIOS. If not then the disk controller is faulty and this is a motherboard problem. A replacement motherboard may not be worth it, put your money towards a new laptop and put the hard disk into an USB hard drive adapter case and use it as an USB external hard drive.

Disk boot failure. Issue:Disk boot failure.
Cause: This issue could be caused by any of the below possibilities.

1. Boot options are not set properly in CMOS
2. Non bootable disc or USB in computer
3. Remove added hardware /check connections
4. Hard disk drive is bad

Solution:Boot options are not set properly in CMOS
Verify that the boot options within CMOS are set properly. Below is an example of how we recommend the boot options be set. Additional information about how to enter CMOS can be found on document CH00192.

1. Floppy drive
2. CD-ROM drive
3. Hard Drive
4. Other / Network

Non-bootable floppy diskette or disc or USB in computer
Verify that there is no floppy diskette or disc in the computer. If the boot options are set improperly the computer could be trying to boot from the disc drive instead of the hard drive.
In addition to verifying there is no disc in the computer make sure that no USB jump drive, external hard disk drive, or memory stick is inside any memory card reader.
If you're wanting to boot from a floppy diskette, CD, DVD, or USB drive and are getting this error message and have verified that your CMOS settings are in the proper order as explained in the above paragraph the diskette or disc you're using is either bad or does not have the proper files on it to make it bootable.

• Additional information about how to make a boot disk can be found on our boot disk help page.
• See document CH000669 for information about creating a bootable disc.

Remove added hardware / check connections
If you've recently installed any new hardware it's suggested that it be removed to verify it's not causing this issue. If after the device has been removed the computer works and it was another IDE / EIDE device ensure that the jumpers are properly set on the hard disk drive.
In addition to removing any new hardware it's also suggested if you've recently moved the computer or installed anything inside the computer that the connections for the drive be checked. Usually it's best to simply disconnect the cables from the back of the drive and reconnect them to make sure they're connected properly. While inside also disconnect and reconnect the cable connected to the motherboard as well. While inside your computer make sure you're aware of ESD.
Bad hard disk drive
If you have followed the above steps and you continue to experience the same issue, unfortunately it is likely that the hard disk drive is bad or the controller is bad.
If available, you may want to connect another known good hard disk drive to the computer to determine if it can be detected. If it is able to be detected then replace your hard disk drive. If it is not detected, unfortunately you will need to replace the motherboard or controller as it is bad.
If no additional hard disk drive is available it is recommended that the hard disk drive be replaced first or that the computer be serviced / repaired.

There are a host of things that could cause this. The first thing to check is to mak sure you have the proper memory setup for your motherboard. Often these days you need to install memory in pairs for the board to boot. Refer to your motherboard manual and make sure the memory you have installed is right fro your board and that you have it installed in the right slots. If you do and it still doesn't work, please reply with your motherboard, CPU and memory specifications so I can look into this further.

You can check the bios and make sure that it is set to boot from USB. Turn computer off. Turn back on and immediately press F2. This will get you into the BIOS. Look around and find boot properties. Set the boot first to USB. If you do not see the USB option, then your motherboard doesn't support the boot from USB option.

go to BIOS MENU by pressing Del or F2 while booting...then check the boot priority and first boot device..change it to hard disk...if then same problem occur then your hard disk might have some problem...

verify your bios settings with regards to what the pc is expecting in way of hard drive.
Do you have the luxury of another hard drive that you can try on this pc ? - this will 'suggest' where the problem rests.
Make sure the lead is fully located on the back of hard drive.
If possible - change the lead for a 'known working' lead (Maybe from the computer that your hard drive was recognized in)