Greetings, I recently purchased a PowerColor 7870 Myst Edition to replace my 5770. When I attempted to boot the system with the 7870 installed, I got a beep code (one long three short) indicating that the system was not detecting a video card. Puzzled, I tried re-installing the 5770 back into the primary PCI-E x16 slot and I was greeted once again with the beep code. The card had been working perfectly in that slot not even 30 minutes prior!
I then tried installing the 5770 into my secondary PCI-E x16 slot (which runs at x4) and I was able to successfully boot. With the 5770 working again, I then swapped it out with the 7870 and while I no longer got the beep error code, the system would not post (the short beep indicating a successful post never happens). So, I'm back on the 5770.
My system is as follows:
PSU: 550W Antec Truepower 2.0
CPU: Phenom II X4 965
RAM: 4 GB DDR2
Mobo: ASUS M4A78 Plus
HD: two 320 GB drives
I've reseated/reinstalled the cards multiple times, cleared the CMOS, and reseated the other components in my system just to be thorough. I suspect that I will need a new motherboard, but I thought it'd be best to get more opinions before I spend the cash. Really puzzled about this and I'd sincerely appreciate any suggestions. Thanks!
I then tried installing the 5770 into my secondary PCI-E x16 slot (which runs at x4) and I was able to successfully boot. With the 5770 working again, I then swapped it out with the 7870 and while I no longer got the beep error code, the system would not post (the short beep indicating a successful post never happens). So, I'm back on the 5770.
My system is as follows:
PSU: 550W Antec Truepower 2.0
CPU: Phenom II X4 965
RAM: 4 GB DDR2
Mobo: ASUS M4A78 Plus
HD: two 320 GB drives
I've reseated/reinstalled the cards multiple times, cleared the CMOS, and reseated the other components in my system just to be thorough. I suspect that I will need a new motherboard, but I thought it'd be best to get more opinions before I spend the cash. Really puzzled about this and I'd sincerely appreciate any suggestions. Thanks!
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