• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Please help,problem!

B

bullseye

n00b
Joined
Jul 2, 2013
Messages
36
Hello all i had a 450Watt Lamtech PSU and i got a new pc upgrade
intel i3 3240
asrock b-75 pro-m
8gb ram sticks 1600
and a VTX HD 7770 1GB DDR5

i bought a 650W plugged everything in and sometimes my pc starts normally but it fails after few minutes and other times when i start my pc this error happens.

My monitor gets some weird green yellow tearring sometimes it gets grey and blue with vertical lines and sometimes it turns out white or blue.Any idea what it may be?The PSU wattage recommented for this GPU is 400W.

https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-frc3/969786_10201516520736106_94185185_n.jpg
 
Do you have a high quality PSU? Too many people skimp on this important component. When you say the computer fails does it always go to tearing on the screen? Do you have another video card to test? It could be a bad PCI-e connector too.
 
Has the video ever been normal? I'm guessing you got a dud. The best thing you can do is test another card in your system or try your vid card in someone elses computer.
 
atm the video is normal but it can randomly stop working anytime and cause my pc to shut down after seeing all these lines yellow things etc etc.
 
These are the main culprits that I can think of:
1 - You got a dud video card
2 - Your PSU is not able to perform correctly
3 - The motherboard could have a bad PCIe riser.
First try the video card in the other PCIe slot. It would be best to try your card in a different system too. Try your old PSU to rule out the new one being a dud.
 
Cant really find out the problem.Tried and other pci slot,
PCIe riser seems to work ok cuz if i wont use any program i can see my monitor clear.
Prob is the PSU.Since i cant fix it i would be better to take my desktop to a technical so he can find out the problem and fix it for me.
 
Make sure the connection between the cable and your monitor is secure. I've had something similar; tore down my system and rebuilt it only to find out the cable was loose on the monitor. Have you checked that?

Otherwise, it could be a bad PSU. Does the 7770 require a PCIe power connection?

Have you put in your old PSU to see if this is still happening? Could be a coincidence?

I'm not familiar with the new PSU; is it a good quality brand?
 
yes it requires pcie power connecton and i got it connected,all cables and monitors are secure.There is times that i turn on my pc and the screen is clear for 1-2 minutes then it start doing the line things.The PSU aint a top brand but not a low one too its a mid range psu.
 
if it worked fine with the 400 watt, then you know its the psu.

Test it with the onboard i3 graphics. If it doesn't artifact with the onboard, then you know that your 7770 is bad.
 
with the onboard gpu it works just fine either with 400 or 650,but when i power up my hd7770 everything dies.
 
What do you mean everything dies? The entire system won't boot?

Second thought, that power supply is just bad. Read this review of the 750 watt version:

"This is a very poor [psu] that is certainly not advisable to buy. It is the cheapest of 750W there is.... The 3.3V, 5V and 12V connection are about 30-40% below the voltage to hear what they have and the-5V and-12V are merged to-8.9V. Problems which occur are that the video card still fails causing the screen to go black. CPU and GPU overclocking is totally impossible and the system itself is unstable..."

The 7770 has revised power requirement of 30 amps on the 12 volt, and I bet that psu even though it says it has 36 amps, is below spec. So, definitely, get a new PSU
 
Last edited:
You have a bad power supply. Replace it with a better quality PSU:

$40 - Corsair CX430 (430W, +12V 32A)
$58 - Corsair CX500 (500W, +12V 38A)
$67 - Corsair CX600 (600W, +12V 46A)
$70 - Antec Earthwatts EA-650 Green (650W, +12V 50A)

Save yourself some heartache and go with the Corsair CX500. Better yet, spend the extra money for the Antec EA-650.
 
As an Amazon Associate, HardForum may earn from qualifying purchases.
Power rating 3.3V 22A, 5V 26A, 12V1 18A, 12V2 18A, not a modern topography, and depending on the trip points, the two 18A rails may be inadequate.
A Corsair CX430, not known as a strong 430watt psu, 3.3V 20A 5V 20A 12V 32A.
 
OP, if your previous PSU was sufficient in power and amperage, and it worked with the 7770, why not just continue using it (assuming it did not break)?
 
teh_chem said:
OP, if your previous PSU was sufficient in power and amperage, and it worked with the 7770, why not just continue using it (assuming it did not break)?
Click to expand...

good point. also, it could still be a bad 7770. do you have a friend that would let you test the 7770 in their board?
 
the thing is that my GPU works fine when i open youtube a program or a game it freezes out.I mean it gets in desktop screen 80% of the time but then it stops working suddenly.I think its a psu problem rather GPU.I may be wrong though.
 
bullseye said:
the thing is that my GPU works fine when i open youtube a program or a game it freezes out.I mean it gets in desktop screen 80% of the time but then it stops working suddenly.I think its a psu problem rather GPU.I may be wrong though.
Click to expand...

It sounds (again, unless the GPU itself broke in the process) that your new PSU doesn't have sufficient or good/clean power going to the GPU (despite its advertised specifications). The thing about this that is worrying is that the PSU is going to everything else; so you could potentially damage other components if it is indeed faulty or malfunctioning. I'd get rid of it ASAP. My recommendation would be to go back to your original 450w PSU since it worked just fine. 450w is plenty of system power if you're not doing a multi-GPU setup, so you probably don't even need to get a different PSU.
 
the thing is that the 450W is quite enough if i use the GPU of my mobo,if i connect the pcie 6pin on it the system wont even boot.So i got a refound of 37Euro that i spended for that 650W and i am willing to give 30-40E more so i can buy a quality one and solve my problem once and for all.So suggest me a quality on in the range of 60-80euro that will last long and will be sufficient for my build.
 
A good PSU is the single best investment you can make in a system - and the last place you want to skimp. Good luck.
 
Thank you all.i will invest more money in a power supply as all of you suggest me,Sorry for my ignorance i am new in the assempling pc parts phase and i thought that PSU shouldnt be something spectacular but now i've learned my lesson.thank you all.I sended my desktop to the shop i bought the parts and ill get it back fixed with a decent PSU.
 
You must log in or register to reply here.
Back
Top