|riider and Fingers thanks for your response.|
The computer is a refirbished HP desktop pavilion p6130f, AMD phenom x4 processor, 8GB mem. 750GB HD and a DVD player-burner. Windows Vista Home Premium upgraded to windows 7. Motherboard is Pegatron M2N78-LA.
When you turn on the computer with original (crashed) hard drive, it says: Reboot and Select proper Boot device or insert Boot Media in selected Boot device and press a key.
I installed a new hard drive. The message reads the same. (As expected).
When I insert the recovery disk in the DVD player, (before power up or after), I get the same message. I suspected my recovery cd's are bad. So I purchased new ones for HP tech-support. I get the same message. The DVD player just doesn't read any cd.
When I hit escape key during the bootup, I choose option 2 to boot from dvd, it says driver not found
When I go the Bios main tab, 1st Drive: [None]. 2nd Drive: [None]. The same for 3rd and 4th. but the memory banks are there.
I realy don't know whats wrong, I only suspected a virus because my antivirus software has expired, and this started with computer locking up, could not close anything, can not turnoff because something in the backround is working, (according to windows). Then it got worst where the HD will not boot at all.
Both drives are connected correctly, and I have reseated both sata plugs, the data and power plugs several times, using different ports, and. Used defferent sata data cable. but the biose will not recognise the drives.
I installed a SATA card under the advise of some technician, he thought it could bad sata ports on the mother board. with the new sata card pluged into the pci express slot. Bios still not recognizing any drive.
DVD tray can be open and close, so there is power there but it won't read any CD. I have tried different (working) opitcal drive or different HD, same problem. I have tried the all these drives on another computer (laptop) using usb adaptor, they work fine. I'm certain there is nothing wrong with any of my drives, except the original one that crashed. It's not bootable but I can still open it up in the laptop using usb adabter.
I measerd the voltages of power supply at the drive plug, 5v at the red wire and 12v at the yellow. I checked the main plug to the motherboard, all voltages are there.
Cmos battery is Lithium type CR2032. My meter measures 3.1v. I don't know what it suppose to be.
I 'm hoping that you'r wright that it could be as simple as a bad cmos battery, but the computer is only 3 years old. I thought it should last longer, but you never know.
I apreciate the help.