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Solve : rebuild a brand computer?

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can i rebuild a desktop by using peripherals from a brand name computer.

I have a REFURBISHED HP PAVILION m7580n that basically broke down.  The hard drive failed.
So, Is it possible to replace the hard drive and buy windows 7 and get this computer to work again
without having any disks for all the peripherals attached to this computer?
Of course.Once you get Windows 7 installed, open Device Manager and GIVE it a careful look; you may need to download some device drivers to get all devices optimally running. Software & Driver Downloads - HP Pavilion Media Center TV m7580n Desktop PCI bought a new 2TB hard drive and OEM windows 7 Home Premium 64 bit and 2 more sticks of 1GB each to max my Ram.
I got everything hooked up but I'm not getting the CMOS screen. (I'm getting the HP Invent screen with options to press either F1, Esc, or F10 for recovery) but my wireless keyboard is not working. I tried plugging into all the external USBs.
I need help!
Thanks in advance Quote

but my wireless keyboard is not working
TRY using a wired keyboard(PS/2 if available). On BIOS setup make sure USB/keyboard is enabled and New HD is recognized and check boot priority, SAVE and exit. You could also remove first added RAM modules first on troubleshooting if everything still do not work and add them after installing OS.Thanks for your response jason2074. 
Unfortunately, I threw out the wired keyboard.
I do NOTICE when I initially plug-in the usb adapter for the keyboard that a red light flashes,
telling me it's getting power. 
I don't get it.  Shouldn't the motherboard recognize this keyboard like it did in the past?
What am I not getting here.You shouldn't plug in/out keyboards with the power on...
A new PS2 keyboard is 10 Bucks...Well, the new ps/2 keyboard doesn't work either.
Are there any other suggestions?
Quote
On BIOS setup make sure USB/keyboard is enabled and New HD is recognized and check boot priority, save and exit
Even with this suggestion, I am stumped. Remove the new drive & the new RAM.  See if you can enter Setup.Finally!!!
Thanks to all of you. I really appreciate all your advice.

Special thanks to Computer Commando.  After your last post, I basically removed all my peripherals. (video card, media card, modem, hard drive, cd-rom, and the extra ram) 

It was great to see the CMOS screen.

One by one, I added one peripheral at a time with no problems.

Again thanks to all who posted.It was probably the media card reader, it's USB.  I seem to remember other threads with the same issue.


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