Brand new Radeon HD 7790 installed but getting weird display

_leoo

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I recently replaced my gpu and I've been getting weird boxes(black and white) on my screen and when i alt-tab back into my game, the graphics looks really broken up for a few seconds then it goes back to normal. Anyone know what could be the problem?
 
Solution
I would call for a return rma it if under warranty if I was you because at this state its no use to you if its not working you got screen tearing and blocks they may be a temp issue with the card which you are not liable for... That's the best advice I can give you on this . I will say I have had such good luck with the 7770 cards and there are asus and I couldn't be happier with them something to consider I know there a tad bit slower but less problems with them as the 7790. Hope I have helped you in some way...
there are few solution but I can't really know which is the problem...
1. try clean installation of the driver, use driversweeper to uninstall the CCC
2. some overclock model of gpu, like Asus HD 7770 Direct CU II have problem with the overclock and you try to underclock the GPU to the stock clock
3. last option, RMA the card...

When you do uninstall previous versions of Catalyst, be sure to clean-up old files extensively, e.g. by CCleaner.
When you do install Catalyst, it is important that you make a choice for all included driver parts. E.g. at the window were you have a choice to check-mark installing "Fast" or second option for "Adapted" (?? ---> I have no English version). I check for the second option and all included parts within that section.
In past (older versions of Catalyst) I didn't check-mark for "AMD APP SDK runtime" option within that section, as I thought SDK is only for developers. But I met several problems by that. By choosing all the included files, problems where gone.

I don't know if your PSU do have several 12 Volt rails, but be sure not to divide / splitting the 12 volt cable of your PSU for your graphics card to other 12 Volt devices.

Can you trace volt, wattage etc. by using GPU-Z - second tab during a time-span of about 8-10 minutes?
(Under load by using the "render" option of the GPU-Z tool).

Are the found problems the same as from your previous card?

The games, are that more old games, so maybe not fully Windows 8 compatible?
You can try for choosing to run under other compatible modes, by going to the program exe file and by right-click under properties choose for another OS compatible mode (e.g. Windows Vista / Windows 7).

http://www.tomshardware.com/answers/id-1877678/problems-gpu-radeon-7790-1gb.html

Some quick searches see if any apply to your case!
 

_leoo

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Yeah it is, i have 3 days left. Should i return it for a refund or a new replacement?

I never had any problem with my graphics with my previous card. It was just I wanted to upgrade and enjoy games in a higher graphics.
 

_leoo

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I tried reinstalling and everything you mentioned. Everything was fine but a week later (today) i started to notice weird graphical errors.
 
I would call for a return rma it if under warranty if I was you because at this state its no use to you if its not working you got screen tearing and blocks they may be a temp issue with the card which you are not liable for... That's the best advice I can give you on this . I will say I have had such good luck with the 7770 cards and there are asus and I couldn't be happier with them something to consider I know there a tad bit slower but less problems with them as the 7790. Hope I have helped you in some way...
 
Solution

_leoo

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Thanks alot Johnny.