Asus P5W DH Deluxe, Asus HD7770 DirectCU DOES NOT WORK :(?

Lechu1777

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Jul 30, 2013
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Hello,

I have P5W DH Deluxe mobo and I had a problem with a graphic card (7900GS) a few years back. Lots of artifacts and was only getting worse. I decided to use my laptop back then and the desktop hasn't been used ever since (I dont know ~3-4 years?). My laptop MB crashed a few weeks ago and I decided to check my desktop PC, because I prefer big, old-fashioned pc rather than laptop. I drove to my friend with the pc and we used his 8800GTS with my motherboard/cpu/ram/hard drive set and everything seemed fine (windows xp booted all right). So I went back home, did some digging and decided to buy Asus HD7770 DirectCU. It's not brand new, but it has ~1,5-year warranty left. The guy who sold the card to me, was said to be fair. Some guy bought a graphic card from him and wrote that everything went fine. Besides it would be stupid to sell broken card which has warranty, wouldnt it? So I believe that the card is ok (Ill drive to the same friend tomorrow to check it 100%) BUT:
1) We both have mobos with PCIE 1.0, which MIGHT be the cause of the problem. So if the card wont start using my friends mobo (P5B non-deluxe), it might be the PCIE version problem, not faulty card. And I don't have anyone nearby who has at least PCIE 2.0 port.
2) I know that PCIE 3.0 card might not work on PCI 1.0 slot, but I found a guy or two on the Internet who claimed that they got Asus P5W DH Deluxe and Asus HD7770 and everything is fine. I even found a guy who has HD7870 and it's doing just fine. Maybe they got some newer revision of the mobo?
3) What about my PSU? I've already tried 2: Chieftec (I dont remember model, but it has ~380W and 14+15A on 12V line. Probably 500W the whole PSU) and Tagan with 30A+30A (together 48A) + 500W on 12V line, IT HAS TO BE ENOUGH! That card is not high-end, after all. And the Tagan is brand new. So it simply can't be the problem.

My spec:
E6600 with Scythe Mine ver.B
P5W Dh Deluxe newest bios
Asus HD7770 DirectCU
2*1GB PDP Patriot 800Mhz LLK
3x SATA + 1x IDE->SATA hard drives (Im using just boot drive for testing)
Audigy 4 (not plugged for now)
no dvd/floppy plugged

What else did I find?
1) I plugged broken 7900GS and then pc boots normally with lots of artifacts and the card is overheating DAMN FAST, I can barely remove it. But like I said earlier, the card is broken. But it shows that mobo is not totally broken and I flashed BIOS that way a few hours ago.
2) I used 3001 BIOS, nothing. I installed 3002 called beta, still nothing. No changes.
3) With HD7770 the mobo seems to work just fine. I mean signals are normal (1 beep like always, like it should be), but display just stays off.
4) Display turnes on SELDOM, but it does. When it happens, I see VERY SMALL booting stage (it's like display was scaled to 10%) and it's full of artifacts, sometimes I can't read anything and sometimes I can even proceed to BIOS and make some changes. I tried setting POWER SLOT in Advanced/Chipset to Heavier, didn't work at all.
5) Northbridge covered with a radiator connected to a heat-pipe is getting pretty hot in a short amount of time, BIOS showed about 48-50 C. In a stage of booting it seems to be too hot, but I'm not any expert.

What do you think I can do right now? I'm angry as hell. If it's the motherboard then it's pointless buying another LGA775 mobo, because it costs about 150-200PLN, used one (I'm from Poland) and Asrock H61M+G2020+4GB DDR3 costs 480PLN (it's 3 times more, but it would be a good setup for future modernisation while LGA775 is so old that only my new graphic card and tagan PSU would be useful if I decide to go for a newer Socket). And I don't want to spend so much money. That PC I have is still far better than laptop I've been using for about 3 years. I would just buy another 2GB of DDR2 which is extremely cheap right now (80PLN ~= 25 USD, if u wanna count 1USD = 3,18PLN)

Do you think that this is:
1) faulty mobo
2) PCIE 1.0 is not enough
3) broken card (I can use a warranty, I got a purchase evidence from the guy I bought the card)

Thanks in advance for some help,
you are my last hope :(
 

Lechu1777

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Jul 30, 2013
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Yeah, I believe you. I've seen a few users who claimed they got HD7770 working on 1.0 PCIE. I tried plugging the card into the other port (Is that correct? I thought that the other slot is only for SLI dual card connection) but nothing changed. I'm going to my friend right now and we'll try pluggin the card to his P5B motherboard. It's still 1.0, but if it works, it's pretty much obvious that mobo is the problem here. I wish I had a friend who has a newer mobo.
 

computer_nugget2

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yeah, looks like the video card is too new. there is this newer lga775 motherboard that my brother used to have. its from gigabyte, its the EP45-UD3P. it has ddr2, and crossfire capable, it has pci-e 2.0 I dont know how much that will cost in your area. or if they dont have that one, then look for the GA-EP43-UD3L. its also pretty good.
 

Lechu1777

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Jul 30, 2013
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These mobos are pretty cheap. Can't find a new one (prob they are out of production now) but used & working costs about 50 USD. I can sell my own P5W DH DLX for the same amount of money. It's working fine, just not with such new g-card.That would be nice to be telling the truth (more replacing than buying new). I can even pay some more money, about 70-80 USD if any mobo with S775 is worth it. For example Asus P5Q costs about 70USD. If I buy PCIE 2.0 compatible mobo then PCIE 3.0 card has to work? I heard that these revisions (2.0 and 3.0) are pretty similar.
 

computer_nugget2

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yeah most high end lga775 motherboards are out of production. but the hd7770 should work on pci-e 2.0, my brother has run my hd7770 on his computer, his gigabyte board has pci-e 2.0 and it worked fine. if you can find a good motherboard that has pci-e 2.0 then buy it.